Finding and choosing the best cloud storage for you or your business can be difficult, particularly because this is a market filled with multiple, different services and providers offering similar features and products. The number of such providers has grown vastly in recent years, mainly down to the fact that cloud storage demand has increased so much.
Many of the services available offer either personal cloud storage or business-level, comprehensively-packaged storage and sync plans: and there are a fair number who provide both personal and business storage. Security is an integral feature that providers must offer when it comes to cloud storage, and the vast majority of companies not only offer this, but affordability and versatility too.
It's also worth noting that most of the best, premium providers also offer the best free cloud storage packages alongside their paid plans. Before you consider your options from the best cloud storage available, remember that security, price, and features will all differ between companies. Most importantly, you need to understand what cloud storage is, and what you or your business need from it.
- Check out our guide to the best cloud storage for photos: free and paid
- What is cloud storage? How it works, and why your business can benefit
- Cloud storage for business: 10 benefits your competitors already enjoy
The top-rated platforms in our guide provide the same user-friendly infrastructures, integrate high-level security provisions within their services, and provide user access to files from any device. Here, we study these important elements, and rate how each storage provider meets them, to assist you in selecting the right service.
We examined features, security, and pricing closely to provide in-depth summaries of the best overall, business-specific and free services. Additionally, we answer key questions on cloud storage, security, and other significant market elements.
Across three lists, we reviewed and tested platforms ranging from personal to enterprise grade cloud storage, ranking the best cloud storage solutions on their capacity, pricing, file size limits, security, and ease of use.
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What is cloud storage?
Cloud storage stores data on a physical drive and makes it accessible to users via a software platform over the internet. These files can then be accessed from any internet-connected device when a user wants to access them, hence the basis for the term "cloud".
There are two main forms of cloud storage: self-hosted, using on-premises (on-prem) infrastructure; or storage as a service (StaaS), using externally managed, third-party infrastructure. The latter's benefits include that providers can achieve economy of scale in managing advanced, expansive data centers, and thus provide large, affordable amounts of storage.
In comparison to self-hosted solutions, StaaS products are nearly always more affordable per TB, are designed for collaboration, and can thus be described as storage and syncing platforms. Users can upload and access data from any connected device, and seamlessly share files. Those of us working from home are relying on the cloud to do our jobs, one way or another.
Cloud sync technology is the most important of these collaborative elements, encompassing link sharing — sharing documents simply and easily across businesses — and file versioning, which allows users to track changes to documents, and view (or easily incorporate) edits made by colleagues.
Essentially, cloud storage offers an integrated, cohesive digital environment compared to static, on-prem solutions, whether via self-hosted platforms like Nextcloud, or StaaS services like Microsoft OneDrive.
The top 3 best cloud storage solutions available
1. IDrive: the best cloud storage available
IDrive ranks consistently highly due to its top features, high security level, and a fair pricing structure. It’s available across Windows, macOS, and Linux-based operating systems, as well as smartphones and tablets running Android or iOS.
2. Google Drive: high-performing, seamlessly integrated
Google Drive has a wealth of useful tools that elevate it beyond mere cloud storage. Its slick apps and tight integration with Google Workspace's suite of products make it easy to fit into workflows, while seamless integration with third-party apps and swift performance make it an easy sell to consumers or businesses.
3. Dropbox: affordable and the file sharing leader
Dropbox remains one of the world’s leading cloud storage solutions, its unobtrusive dashboard ensuring it remains one of the simplest to use. In turn, the freedom to choose third-party applications for integration should not be underestimated in comparison to Dropbox's competitors.
Which is the best cloud storage service?
In terms of premium providers, IDrive is top, as it provides great value for money across a range of impressive plans, and highly secure cloud storage. It remains the clear frontrunner for users without massive storage needs, and the features relative to the cost are unmatched. Second and third are Google Drive and Dropbox, followed by Microsoft OneDrive, Zoolz and pCloud.
For business cloud storage, Microsoft OneDrive is highest-rated, providing integrations with the Microsoft 365 application suite as both a cloud storage and cloud syncing platform. Other top features include file versioning, tracked changes, link sharing, AES 256-bit encryption, and the Personal Vault, providing unlimited end-to-end encryption for all business customers.
Dropbox Business comes a close second, followed by IDrive, Nextcloud, Backblaze, Tresorit and SpiderOak. Finally, IDrive tops our free providers list, followed by Dropbox and OneDrive, while Mega, Apple iCloud, and pCloud run the top three close.
The best cloud storage solutions
IDrive takes first in our list of the best premium cloud storage providers, and for good reason. It offers great value for money, provides highly secure cloud storage solutions, and has an option for every user.
The basic free forever plan only supports 5GB of storage, but this should be enough for you to test the platform. Personal plans that support one user and unlimited devices cost $52.12 a year ($69.50 on renewal) for 5TB or $74.62 a year ($99.50 on renewal) for 10TB of storage.
Team plans include a limited number of devices and users, and start at $74.62 a year for five computers, five users, and 5TB of storage. IDrive is also currently offering 5TB for a hugely discounted price of $3.48 for the first year — this is the most affordable high-capacity plan we’ve seen.
IDrive's Business plans are significantly more expensive, but support unlimited users and unlimited servers, computers, and databases. Prices start at $149.62 a year for 500GB of storage, and range up to $8,699.62 a year for 50TB.
All plans can be used on various desktop and mobile operating systems, including Windows, Mac, Linux, Android, and iOS. You can set up continuous data backup if required, and it’s even possible to create a copy of external hard drives and NAS (network-attached storage) devices.
Files can be accessed from anywhere with an internet connection, and file sharing is extremely easy. All plans come with the innovative IDrive Express feature, which enables you to back up files and data to a physical storage device, which is then mailed to your chosen address. This is available once per year with the Personal plans, and three times a year with the Team and Business plans.
Read our full IDrive personal cloud backup review to find out more about the platform, and why we've ranked it first.
Google’s cloud storage walks hand in hand with Android and Google Workspace. If these platforms are already a part of your workflow, Google Drive offers a feature-rich, affordable native backup-and-sync solution.
While not as barebones as some of the other options listed here, Google Drive’s UI is clean and intuitive. It is worth remembering, however, that this is more than a cloud storage platform. It comes with companion apps including Google Photos, Docs, Sheets, and Slides — together known as Google Workspace.
Consequently, Google Drive lets you create, edit, store, view, and synchronize your documents using a unified, web-based interface.
When you open a new account, Google offers you free storage of up to 15GB on Google Drive. This plan is yours to keep forever, and if you wish to upgrade to a spacier storage plan down the road, you can do so. The paid plans, offered under the banner of Google One, start at $1.99 a month for 100GB. From there, you can upgrade your storage space to a maximum of 30TB for $299.99 a month.
The web interface, while very attractive, isn’t the easiest to use. This problem is easily solved by downloading the Google Drive desktop application for Windows and macOS. This features a file explorer-based drag-and-drop system not dissimilar to Microsoft OneDrive, which lets you back up, store, modify, and delete files directly from your desktop.
For more information on the platform, read our full Google Drive review.
Dropbox is a fantastic choice for personal cloud storage. Plans are affordable, the user interface is impressive, and it integrates well with many third-party platforms.
It is a leader in file sharing, with several features helping to make it easy to share large files with others, whether they use Dropbox or not. However, one limitation is that you can’t back up external or network drives — Dropbox only stores what you transfer to the Dropbox folder on your device. This isn’t a major issue, but differentiates it from competitors like IDrive.
Security is impressive without being exceptional, with all files are encrypted at rest and in transit, though there is no end-to-end encryption. Accounts can also be secured with two-factor authentication (2FA).
Despite those limitations, we think you could do much worse than Dropbox for cloud storage. You can read our Dropbox review for more details.
Zoolz offers high-quality cloud storage backed by the Amazon Web Services (AWS) ecosystem. It boasts excellent security, including full 256-bit AES (Advanced Encryption Standard) encryption, and compliance with various legislative frameworks including HIPPA (the Health Insurance Portability and Accountability Act) and GDPR (the General Data Protection Regulation).
A fully functional free trial is available with 50GB of storage, enabling you to try the service before committing. Prices range from $14.99 a month for 1TB of storage to $674.99 a month for 50TB. Significant discounts are available with annual payments.
All business plans support unlimited users, unlimited server backups, and unlimited external drive connections. Users also have access to excellent 24/7 live support and a comprehensive help center.
The Zoolz desktop interface is neat and easy to navigate, and there are also mobile apps available for managing files on the go. Unfortunately, these are clunky and frustrating to use, while upload and download speeds can be slow, which could be an issue if frequently working with larger files.
Microsoft OneDrive is the ultimate cloud storage solution for Windows 10 and Microsoft 365 users, and is also available for users of macOS, Android, and iOS. Strangely enough, it is also available to Xbox One console gamers, making it possible to store precious game save files safely in the cloud.
The platform balances high-capacity storage with functional user interfaces, powerful integrations with the entire Microsoft 365 suite, and a robust security framework. Once you’re set up, it will perform as described with no further effort or stress on your part.
The service is very well integrated into Windows. In essence, it enables you take away any file or folder on your desktop and access it on a variety of other devices. It also offers the ability to share files and folders with users who don’t have OneDrive.
You can also edit files directly on the cloud, without the need to download them every time. From Outlook to AutoCAD, OneDrive is compatible with a variety of different other services, both internal and third-party. Security-wise, it offers the Personal Vault feature, which lets you lock away essential files safely via 2FA and Bitlocker encryption.
If you're a Microsoft 365 subscriber, you have up to 1TB of free storage via OneDrive. Even if you aren’t, you can test it with a forever-free storage capacity of 5GB. You can always expand storage later via its personal plans, with 100GB for just $1.99 a month.
OneDrive is available for businesses at a reasonable price of $5 per user a month, or for free with a Microsoft 365 for Business subscription.
Read our full Microsoft OneDrive review to learn more about the service and its features.
pCloud is one of the only cloud storage providers offering a lifetime subscription, providing you with 500GB of storage for a one-time payment of $175, or 2TB for $350. Alternatively, annual plans are available for $47.88 and $95.88 respectively.
Monthly payment options are also available, and there’s a fully functional free plan with 10GB of storage. You can also choose a family plan, which supports up to four users, while business-specific solutions start at $9.99 per user. All plans come with advanced collaboration and file-sharing features, and you can even back up files from a series of third-party platforms.
Additionally, all files are protected by TLS/SSL (Transport Layer Security/Secure Sockets Layer) security, with 256-bit AES encryption. Powerful Android and iOS apps are available for mobile management, and there are tools to help you set up automatic social media uploads should you require this.
Android, iOS, Windows, Linux, and Mac operating systems are supported, and there are also browser extensions for Opera, Chrome, and Firefox.
To learn more about the service, read our full pCloud review.
How to choose the best cloud storage for business
Finding the best cloud storage for your business means finding a highly secure and stable system that protects data at all times — look for those providing end-to-end encryption and zero-knowledge architecture, the latter in particular as it prevents providers from accessing your data, even if compelled to by law enforcement.
Any business cloud storage service will also need to provide advanced cloud sync and collaborative features for seamless digital workflows, in order to increase and facilitate your employees' cooperation an productivity. These elements, as mentioned earlier, are integral to StaaS products.
Another advantage is the powerful administrative features provided, particularly for medium- and large-sized organizations, because these enable access management and system usage auditing via 2FA and roles-based permissions. In essence, businesses should look for a provider of cloud storage and cloud syncing capabilities, to increase company productivity and streamline workflows.
- Read our guide to the best file syncing solutions
The best business cloud storage solutions
Microsoft OneDrive is the perfect platform for businesses already using Microsoft 365. Integration across those applications, including Word, Excel, Teams, and SharePoint, enables users to collaborate dynamically, making OneDrive our choice for the best cloud storage platform for business.
One of its greatest strengths is that it's both a cloud storage and cloud syncing platform. File versioning, tracked changes, and link sharing all operate seamlessly alongside OneDrive’s core functionalities, strengthening its credentials. Security is another strength, as while AES 256-bit encryption is applied to all data at rest, Microsoft goes further with the Personal Vault, with this subfolder providing unlimited end-to-end encryption for all business customers.
Data is also backed up across several servers, so you can be confident it won’t be lost. Microsoft’s enterprise plans also offer best-in-class cybersecurity services and advanced threat detection functionality. Ensuring the integrity of employees’ accounts is easy too, with administrators able to enforce 2FA and periodic password changes.
Read our full OneDrive for Business review to find out why we ranked it first for business cloud storage.
Dropbox, while not a jack-of-all-trades like Google Workspace, still comes with plenty of options to create and modify files alongside backup and storage.
Its simple desktop client provides drag-and-drop functionality for files of any known format onto the cloud, and the system prides itself on compatibility. Files can also be easily circulated among users using the in-built share function, even if the person you’re sharing them with does not have a Dropbox account. Dropbox Transfer also makes it extremely easy to transfer files to others, whether or not they've got an account.
That way, the receiver gets access to an exact copy of the file with all the appropriate permissions, without getting to the original. With free accounts, Dropbox Transfer has a file size limit of 100MB. Upgrade to a business account, however, and the maximum file size quickly expands to a whopping 100GB.
Dropbox Business Standard is available for $12.50 per user a month when billed annually, for a minimum of three users; while Dropbox Business Advanced is available for $20 per user a month, again for a minimum of three users. While the standard plan limits storage space to 5GB, the advanced plan is a rarity that offers truly unlimited cloud storage for businesses.
The service's clean, minimalistic design is both easy to understand and operate. The desktop app is available on Windows and macOS, alongside a smartphone app available via Google Play and Apple App Store. There’s also a very smooth web-based interface for those wanting to keep things lightweight.
To find out more about the platform, read our Dropbox Business review.
IDrive is undoubtedly one of the best cloud backup and cloud storage platforms. However, the lack of cloud syncing features means it loses some marks from a business standpoint. Strengths include file versioning and snapshots, business-specific features such as user management and activity logs, and security, as businesses can choose to employ end-to-end or standard encryption.
Collaboratively speaking however, this is an area where IDrive doesn’t excel. It simply doesn’t integrate with third-party platforms in the same way as competitors like Microsoft OneDrive or Nextcloud. IDrive is instead oriented towards businesses that want high-capacity, highly secure storage that can back up several servers and devices simultaneously.
Likewise, if your staff need access to a lot of static data, with less emphasis on collaborative editing, then it's certainly one of the best cloud storage platforms for you. Read our IDrive review focusing on the business services to learn more, and find out what we made of it.
Note: IDrive is currently offering 5TB of storage for a hugely discounted price of $3.48 for the first year. This is the most affordable high-capacity plan we’ve ever seen.
In the strictest sense of the word, Nextcloud isn’t a cloud storage provider. Instead, it’s a suite of software platforms providing self-hosted cloud storage and file management services. As a result, it's likely the best platform for you if your business is looking for an innovative and self-hosted cloud storage solution.
Nextcloud enables business leaders to connect on-prem storage infrastructure to a local area network (LAN), essentially creating a private cloud. There are several benefits of such a system, alongside a few potential negatives. Benefits include enhanced control over security, because you will always know exactly where your data is stored.
Technically speaking, it reduces the attack surface area, and IT administrators also have significant control over how data is stored, including the level of encryption used. This enables businesses to tailor their storage solution to their specific needs.
Another strength is the wide range of open-source software applications that can be integrated into your cloud ecosystem. These include Nextcloud Files, Nextcloud Talk (a video-conferencing platform), and Collabora Online (a suite of office applications). These integrations enable Nextcloud to compete against competitors offering extensive cross-platform integrations, such as Microsoft and Google.
The potential downsides — we’d call them important considerations — include an increased responsibility on the behalf of business leaders to manage data backup and maintain infrastructure. In short, Nextcloud’s flexibility means more responsibility is shifted to the business.
Read our Nextcloud review for more information and a detailed analysis of the service.
Unlike the other options mentioned so far, Backblaze doesn’t come with file-sharing or management capabilities. Instead, it offers a very secure backup service that keeps essential files safe from malware attacks and system corruption. Its emphasis is on security, while functionality takes a back step.
Backblaze is built with novices in mind, as you only need to set it up once, and only need to access it again should your computer somehow be compromised. There’s a very simple installation wizard that guides you through the first-time setup, and once done, Backblaze will automatically back up all files and folders in the background.
You can set up backups to run continuously, daily, or when manually prompted. Usage is restricted to just one device per user per account, and while there’s support for external hard drives, there is none for network drives or mobile devices.
While advanced users may find functionality lacking, those with little cloud storage experience will find Backblaze appealing for the very same reason. For as little as $6 a month or $60 a year, users get access to unlimited storage space on a single device. While it only stores older versions of files for up to 30 days, you can extend that to one year for an additional $2 a month, and there are no file size limits.
Despite limited functionality, Backblaze is really popular with its user base, with over 1EB (exabyte, or one million terabytes) of data stored securely. It has also helped recover over 50 billion files since launch. If you're looking for a simplified option that lets you back up and store files on the cloud, you need look no further.
You can learn more about the service by reading our Backblaze cloud backup review.
Tresorit banks its cloud storage technology on a claim of “zero-knowledge encryption”. Apart from the select few you choose to share files with, no one will have access to what you upload, with your account secured by 2FA and end-to-end encryption.
Because of the strong focus on security and privacy, Tresorit’s technology doesn’t integrate with third party applications. There are no options to edit or modify files on the cloud, or stream audio and video, without downloading them first. These elements can feel limiting, but if you're a data-centric company requiring extensive security, Tresorit is well worth the compromise.
It offers both cloud storage and network drives, with data residency options for several data centers worldwide helping you choose where to store data. It has good servers with decent download and upload speeds. The desktop and mobile apps are smart and intuitive, while a guided tour helps you get your bearings when you begin.
Tresorit offers a free 14-day trial on all its subscription plans, which start at $20 per user a month when billed annually. That plan, Business Standard, offers up to 1TB of storage space per user for three to nine users. The Business Plus plan meanwhile is available for $24 a month per user for 10 to 100 users, with 1TB of storage per user. There is also an enterprise plan for upwards of 100 users.
Read our full Tresorit review to find out more about this cloud storage provider.
SpiderOak One Backup is a multi-purpose cloud platform with a near best-in-class security framework. It provides cloud storage, syncing, and backup across all operating systems, although the lack of business-specific features is somewhat disappointing. It is also more expensive than many competitors.
A standout feature is end-to-end encryption being standard for all data managed, and few other platforms provide this kind of zero-knowledge architecture. It also means that no one at SpiderOak can access your company’s data, even if compelled to by law enforcement.
If you’re looking for a highly secure and reliable cloud storage solution, you'd do well to consider SpiderOak’s offerings. You can read our full SpiderOak One Backup review to find out more about the platform.
What you need to know about free cloud storage
Many cloud storage providers offer free plans, for those with more basic needs and tight budgets. While these plans may be low on features and storage space, they are still more than enough for most personal users. Such plans are ideal for storing documents and images in the cloud, but for anything more demanding, you may have to upgrade and pay.
Advantages of even a small quota of free storage include that you can keep a secure copy of your most important files, and then easily always access them. It's also good, for example, if you're a freelancer for collaborating with others on small projects.
While you might think you don’t have much to lose, since the providers listed below are all free (and in most cases, you'd be right), there are however a few factors worth considering. Here are some of the best free services available right now, to help you make the right decision when choosing the right option for personal use.
- Explore the best personal cloud storage solutions
The best free cloud storage providers
IDrive is the ideal platform if you need somewhere to back up multiple servers and devices, and prioritize end-to-end encryption. However, it isn’t designed for collaboration, and file-sharing is somewhat limited. The basic free forever plan only supports 5GB of storage, but this should be enough for you to test the platform.
The apps aren’t the most impressive, but work as described, and the web app in particular is surprisingly useful, making it easy to manage your various backups. If you’re a photographer, video editor, or anyone managing lots of data, IDrive should be one of your top considerations.
Dropbox is a fantastic choice for personal cloud storage. Plans are affordable, the user interface is impressive, and it integrates well with many third-party platforms. The free option offers 2GB of storage, and the file sharing leader provides several features that make it easy to share large files with others, whether they use Dropbox or not.
One limitation however is that you can’t back up external or network drives to your account. Dropbox only stores what you transfer to its folder on your device. This isn’t a major issue, but differentiates the platform from competitors like IDrive.
Security is impressive without being exceptional, with all files encrypted at rest and in transit, but there is no end-to-end encryption, though accounts can also be secured with 2FA. We think however that you could do much worse than Dropbox for your cloud storage solution.
For personal use, Microsoft OneDrive is a great cloud storage option, with its free plan offering 5GB of storage. It balances high-capacity storage with functional user interfaces, powerful integrations with the entire Microsoft 365 suite, and a robust security framework.
Once you’ve set OneDrive up, it will perform as described with no further effort or stress on your part. Current users of Microsoft 365 also benefit, because 1TB of OneDrive storage is included in your subscription.
MEGA.nz is a very popular, New Zealand-based cloud storage company, founded in 2013 by Kim Dotcom, a rather controversial figure in the online world. It offers end-to-end encryption and a generous 50GB of storage via its free plan, with absolutely no throttling.
While its zero-knowledge encryption technology makes collaboration a bit difficult, individual files can still be shared using a dedicated encryption key required to unlock them. Files can also be password-protected to add another layer of security.
Mega does not impose any limitations on individual file size, and allows restoration of previous versions of corrupted files using built-in file versioning technology. The downloadable client is available for Windows, macOS, Linux, Android, and iOS, while its entire source code was released on Github. This is good for tech-savvy users who want to audit the technology for security issues.
However, consumers should be aware of its controversial history. Since leaving in 2015, Dotcom has leveled serious accusations against Mega for possible ties with the New Zealand and Chinese governments. While these accusations have been exaggerated, it is true that its majority shareholder is Beijing-based businesswoman Li Zhi Min.
However, as well as its source code being publicly available, Mega's zero-knowledge encryption technology also implies it can't get to your data without permission. Read our full Mega review for more details.
If you use Apple mobile and desktop devices, and don’t plan on making the jump to Windows or Android anytime soon, then Apple iCloud is the logical cloud storage platform for you.
When used on Apple OSs, nothing comes close to iCloud in terms of integration, functionality, and ease of use. It seamlessly takes care of device and app backup, and syncs data across all connected devices. For miscellaneous file storage, there is also iCloud Drive.
iCloud’s free plans offer 5GB of free storage, the lowest offering of this list of free providers. However, you can always buy more storage, starting at $0.99 a month for 50GB and ranging up to $9.99 for 2TB. Moreover, any items purchased from the iTunes Store can be stored for free without counting towards the free 5GB. We also like that you can share the 2TB storage plan with family members.
iCloud doesn’t impose any limits on individual file size. Users can also take advantage of the iWork apps included with it, such as Pages, Numbers, and Keynote. Compatibility issues prevent iCloud from achieving mainstream status, but it still makes for a lucrative offering for MacBook or iPad users.
However, security is not a strength, as most data is stored with AES 128-bit encryption. 2FA is included, and should be activated by all users.
Read our full Apple iCloud review for more details.
pCloud differentiates itself by offering a lifetime access option as well as the standard subscription-based options. If you prefer paying a one-off fee for cloud storage, pCloud is the best choice, and while it does itself a disservice with a confusing pricing model, its free option provides 10GB of storage.
However, its range of optional add-ons can be confusing to understand. For example, advanced encryption is not a standard feature, but must be purchased separately. Nonetheless, pCloud offers a range of easy-to-use apps that make storing your files and backing up important files, servers, and devices easy.
It includes typical features such as file versioning, file recovery, and link sharing. There are also innovative features including automatic upload of content shared via social media. We like pCloud because it balances third-party software integration with admirable backup features: however, it isn’t a leader in either category.
How secure is cloud storage?
While cloud storage services might, theoretically, not be as secure as local storage (as it is, by definition, a networked system), most provide cutting-edge security. Both end-to-end encryption and zero-knowledge architecture make leading cloud storage providers almost hack-proof, so not even their staff can access your data.
In-transit and at-rest encryption mean that even if a cybercriminal could intercept your data (which is highly unlikely), it would be totally indecipherable. StaaS providers also ensure data centers are secure: 24/7 security guards, biometric authorization for entry, and frequent security auditing are the main elements to expect.
Security is crucial for enterprise cloud storage, particularly those in privacy-sensitive industries. Investing in a provider with state-of-the-art security policies is non-negotiable, and the best not only protect data, but the infrastructure housing it.
For most businesses, the global location of a data center will influence your choice. Different countries have different data privacy laws, so you must ensure your data is stored in a country that complies with your organization’s data privacy obligations.
Administrator controls — such as 2FA, roles-based permissions and auditing — enable you or IT staff to manage access and audit system usage. In 2021, there is no reason to let security concerns deter you from using a cloud storage service for personal and professional use.
If you want to learn more about cloud storage security, make sure to read our features analyzing providers, explaining how secure it can be, and how to use it securely: