🟡 Trust Rating: Moderate
IDrive's encryption is genuinely solid AES-256, and it offers a real zero-knowledge option. But that option only exists if you turn it on the day you sign up, it's a US company subject to US legal process, and as of this review there's an unpatched 2026 privilege-escalation bug in its Windows client. Cheap backup, but the privacy part is entirely on you.
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Try IDrive Online Backup →What is IDrive?
IDrive Inc. (formerly Pro Softnet Corporation, rebranded in 2013) is a privately held backup and cloud storage company based in Calabasas, California, founded and still run by CEO Raghu Kulkarni. It sells five distinct products under one brand: personal online backup, cloud-to-cloud backup for services like Microsoft 365 and Google Workspace, IDrive e2 (S3-compatible object storage), IDrive BMR (bare-metal disaster recovery for whole machines), and IDrive 360 (endpoint backup for businesses and MSPs). This review covers personal backup first, since that's what most readers here want, then the other four further down.
Critical Privacy Concerns
⚠️ Important Considerations
- Zero-Knowledge Is Opt-In, Once - a private encryption key that locks IDrive itself out of your data only exists if you enable it during initial account setup. Miss that step and you cannot add it later without starting a new account from scratch.
- US Jurisdiction - headquartered in Calabasas, California. Subject to US subpoenas, national security letters, and the CLOUD Act, same as any US company, regardless of what encryption option you picked.
- Unpatched Privilege-Escalation Bug (2026) - CVE-2026-1995 affects the IDrive for Windows client (version 7.0.0.63 and earlier): weak folder permissions let a low-privileged local user plant a file that the backup service then executes with full SYSTEM rights. IDrive has confirmed a patch is coming but hadn't shipped it as of this review.
- A 2018 Phishing Incident - a user reported receiving phishing email sent to an address only IDrive had, paired with their real username. IDrive initially denied any breach, then acknowledged the issue after more users reported the same thing.
The Private Key Decision (Read This Before You Sign Up)
This is the single most important choice IDrive gives you, and it's easy to miss.
Default Setup: IDrive Holds the Keys
If you sign up normally, IDrive encrypts your data with AES-256 in transit and at rest, but IDrive itself holds the decryption keys. That means IDrive employees can technically access your files, and a US legal order can compel IDrive to hand them over in a form investigators can read. This is the same model as Dropbox or Google Drive: encrypted, but not from IDrive.
Private Key Setup: You Hold the Keys
During initial signup, and only during initial signup, IDrive lets you set a private encryption key instead. Do this and your files are encrypted with a key that never touches IDrive's servers. IDrive cannot read your data, cannot hand over readable files under any legal order, and cannot help you recover it if you forget the key. There is no backdoor and no customer support recovery option. Lose the key, lose the data, permanently.
The Tradeoff Nobody Advertises
- You cannot switch to a private key after the fact. Signed up the normal way already? You'd need a brand new account.
- With a private key set, you lose IDrive's file and folder sharing features entirely, since sharing requires IDrive to be able to decrypt what it's sharing.
- Backblaze, IDrive's main competitor, has the identical tradeoff structure with its own Personal Encryption Key, including one added wrinkle: restoring through Backblaze's web interface requires sending them your key, which defeats the point. Always restore through the desktop app if you've gone this route with either service.
Bottom line on this section: if you want IDrive to actually be private, not just encrypted, you must select the private key option the moment you create your account. If you already have an account without one, either start a new one and migrate your data, or treat IDrive purely as a cheap encrypted-blob storage target and add your own client-side encryption on top (see the e2 section below and our full backup comparison guide for how).
Technical Specifications
Security Features
- Encryption: AES-256 in transit and at rest; optional private key for true zero-knowledge (set at signup only)
- Ransomware Protection: IDrive Snapshots keep up to 30 point-in-time versions, so a ransomware encryption event doesn't overwrite your only clean backup
- Two-Factor Authentication: Available
- Compliance Certifications: SOC 2 Type II, ISO 27001:2022, EU-US and Swiss-US Data Privacy Framework - these are operational-security and legal-transfer certifications aimed at businesses, not an independent audit proving IDrive can't read your files. The private key is what actually does that.
Platforms
- Windows, macOS, Linux (command-line)
- iOS, Android
- NAS device backup (Synology, QNAP)
- Browser-based access and restore
Pricing Structure (Personal Backup)
| Plan | First Year | Renewal |
|---|---|---|
| 5 TB | $69.65/year | ~$99.50/year |
| 10 TB | $99.75/year | ~$199.50/year |
Larger 20TB/50TB/100TB tiers exist at proportionally higher cost. The first-year discount is real but temporary: budget for the renewal price, not the signup price, when deciding if this is a good deal.
Per-terabyte, IDrive undercuts Dropbox and Google One by a wide margin even at renewal pricing. It's a genuinely cheap way to store a lot of data. Just remember that "cheap" and "private" are two separate questions here.
Beyond Personal Backup: IDrive's Other Products
IDrive sells four other products under the same brand. They're built for different threat models (mostly small business and IT, not individual privacy), so we cover them briefly rather than in full review depth.
IDrive e2: S3-Compatible Object Storage
Raw, S3-compatible cloud object storage aimed at developers and self-hosters, not consumer backup. No egress, ingress, or API charges as long as your monthly downloads stay under roughly 3x your stored volume, which makes it dramatically cheaper than AWS S3 for most real-world use. This is the product we actually recommend for privacy-conscious technical users: point an open-source, client-side-encrypting tool like restic, Kopia, or Duplicati at an e2 bucket, and your data is encrypted before it ever leaves your machine using a tool you can audit yourself, instead of trusting IDrive's own private-key implementation.
IDrive BMR: Bare-Metal Recovery
Image-based backup of an entire machine, operating system and all, with the ability to restore to new hardware or spin up a virtual instance after a failure. Aimed at small business continuity, not personal privacy. Still AES-256 encrypted; the same private-key logic above applies if that matters to you.
IDrive 360: Endpoint Backup for Businesses and MSPs
Centralized backup across many machines in an organization, with admin controls and audit logging. This is the product that actually holds the SOC 2 Type II certification mentioned above. If you run a small business or manage other people's machines, it's worth a look; it isn't built for a single privacy-conscious individual.
IDrive Cloud-to-Cloud Backup (C2C)
Backs up SaaS data you don't control the servers for, Microsoft 365 mail/OneDrive/SharePoint/Teams, Google Workspace, and similar, with point-in-time recovery. Useful if you or your business depends on a SaaS platform and want a copy that survives a ransomware attack or an accidental deletion inside that platform. Not a personal-privacy tool: you're backing up data that already lives on someone else's servers.
IDrive vs. Alternatives
IDrive vs. Backblaze
- IDrive: Cheaper per terabyte at renewal pricing, private key at signup, multi-device backup on one plan
- Backblaze: Similar private-key tradeoff (their Personal Encryption Key), one computer per plan, longer-standing reputation for straightforward personal backup
IDrive vs. Zero-Knowledge Sync Storage (Proton Drive, Sync.com)
- IDrive: Versioned backup, cheaper per terabyte, zero-knowledge only if you remember to turn it on
- Proton Drive / Sync.com: Zero-knowledge by default, no opt-in step to forget, built for active file access and sharing rather than disaster-recovery style backup. See our Encrypted Cloud Storage Comparison for the full breakdown.
IDrive vs. Self-Hosted (restic/Kopia + e2 or a NAS)
- IDrive: Easier setup, IDrive's own apps handle everything
- Self-hosted encryption on top of e2: You control the encryption implementation and audit it yourself instead of trusting IDrive's, at the cost of more setup work. This is the path we actually recommend for anyone in a real high-threat situation. Full walkthrough in our backup comparison guide.
When to Use IDrive
Acceptable Use Cases
✅ General disaster-recovery backup (dead hard drive, stolen laptop, accidental deletion)
✅ Ransomware recovery via point-in-time Snapshots
✅ Cheap S3-compatible storage for your own encrypted backup tooling (via e2)
Not Recommended For
❌ Anyone who already has an account without the private key set - IDrive can read your files, full stop, until you start over
❌ High-threat situations (activists, journalists) without pairing it with your own client-side encryption
❌ Anyone unwilling to accept "lose the key, lose the data forever" - the zero-knowledge option has no recovery path by design
The Bottom Line
Consider IDrive if:- You set the private encryption key at signup and treat the "no recovery if lost" tradeoff as acceptable
- You want cheap, versioned, ransomware-resistant backup and don't need file sharing
- You're a developer who wants affordable S3-compatible storage (e2) to pair with your own encryption tooling
- You already have an account without a private key and assumed it was zero-knowledge by default (it isn't)
- You need active file sharing and zero-knowledge encryption at the same time (pick a sync-first provider instead)
- You're not comfortable with a US-jurisdiction company holding your data even when it can't read it
⚠️ Final Assessment
IDrive's technology is genuinely good, and the private key option is a real zero-knowledge mechanism, not marketing. The problem is entirely in the defaults and the discoverability: most people who sign up never see the private-key prompt clearly enough to use it, and once they've skipped it, there's no way back. Treat IDrive as cheap, capable, US-jurisdiction storage that becomes genuinely private only through a deliberate, irreversible choice you have to make on day one. If you'd rather not rely on remembering that, use IDrive e2 as a raw storage target and encrypt with your own open-source tool instead.