Data annotation security and compliance
With data annotation, people tag your photos, video, text or audio so that AI software can learn from this material. Check three things before those files go to another company. Was its security checked by an outside firm, for example through SOC 2 or ISO 27001? In the company's words, which privacy laws does it follow? Could the work happen on computers you own? This page compares 15 labeling companies and 12 labeling platforms, meaning programs for doing the labeling yourself; every one links to the page its claim comes from.
- SOC 2 named
- 10 out of 15labeling firms
- ISO 27001 named
- 11 out of 15labeling firms
- HIPAA named
- 6 out of 15labeling firms
Audits and laws explained in plain language
- SOC 2: an outside firm checks how well a company protects the files of its clients. Type I reviews a single day; Type II covers several months, making it the stronger check.
- ISO 27001: a global set of rules about keeping data safe, with an outside firm checking that the company follows them.
- ISO 27701: sits on top of ISO 27001 and adds checks on personal data, like names and addresses.
- ISO 9001: examines whether a company follows set steps so its work is done the same way on every job. Because it's a quality standard, not a security audit, the tables do not treat it as one.
- HIPAA: a US law guarding the medical records of patients.
- TISAX: car companies ask that their suppliers pass this security check.
- GDPR: the European Union's law that guards personal details about people.
- CCPA: a California law protecting people's personal information.
- NIST 800-171: rules from the US government for keeping sensitive files secure.
With a security check, an outside firm has examined the business. A law is a rule that the company says it follows. Because nobody checks the claim for you, ask for proof.

Annotation companies and their security audits
"Not mentioned" means the company does not state it on its own pages. The company may still have it, so ask them.
| Company | SOC 2 | ISO 27001 | HIPAA | GDPR | Other checks | Source |
|---|---|---|---|---|---|---|
| Type II | Not mentioned | Not mentioned | Not mentioned | No other named | scale.com | |
| Type II | Yes | Yes | Yes | No other named | appen.com | |
| (the type isn't stated) | Yes | Not mentioned | Not mentioned | TISAX | telusdigital.com | |
| Type II | Yes | Yes | Yes | ISO 9001, TISAX | imerit.ai · imerit.ai/compliance-and-certifications | |
| Not mentioned | Yes | Not mentioned | Yes | ISO 9001, TISAX | sama.com | |
| (the type isn't stated) | Yes | Yes | Yes | ISO 9001 | cloudfactory.com/certifications-and-compliance · cloudfactory.com/pricing | |
| Not mentioned | Yes | Not mentioned | Yes | No other named | labelyourdata.com | |
| Type II | Yes | Yes | Not mentioned | ISO 9001 | shaip.com · shaip.com/security-and-compliance | |
| Type II | Yes | Yes | Yes | ISO 9001, CCPA | cogitotech.com | |
| (the type isn't stated) | Not mentioned | Not mentioned | Yes | No other named | mindy-support.com · mindy-support.com/data-engineering-services | |
| (the type isn't stated) | Yes | Not mentioned | Not mentioned | ISO 27701 (personal data) | toloka.ai · toloka.ai/soc-2 | |
| Not mentioned | Not mentioned | Not mentioned | Yes | No other named | surgehq.ai | |
| Not mentioned | Yes | Not mentioned | Not mentioned | ISO 9001 | innodata.com | |
| Not mentioned | Yes | Yes | Yes | ISO 9001 | keymakr.com | |
| Type I | Not mentioned | Not mentioned | Not mentioned | No other named | anolytics.ai |
Labeling platforms and their security
When staff from your company will do the labeling, look at where the platform runs. Your files never leave you if the platform runs on your own computers. "Online" means you reach it through the internet, while the platform company's computers run it. Online space that only your company controls is a private cloud. The highest plan costs the most; it is often called Enterprise.
| Platform | Where it runs | SOC 2 | ISO 27001 | HIPAA | GDPR | Other checks | Source |
|---|---|---|---|---|---|---|---|
| Online | Type II | Not mentioned | Not mentioned | Not mentioned | NIST 800-171 | labelbox.com | |
| A private cloud, online, or your own computers as the top-plan option | (the type isn't stated) | Not mentioned | Yes | Yes | No other named | encord.com · encord.com/pricing | |
| Online, or your own private cloud | Type II | Not mentioned | Yes | Not mentioned | No other named | v7labs.com | |
| Online | Type II | Yes | Not mentioned | Not mentioned | No other named | superannotate.com | |
| Online, or your own computers (top plan) | Type II | Yes | Yes | Not mentioned | No other named | kili-technology.com · kili-technology.com/pricing | |
| Your own computers, or online | (the type isn't stated) | Not mentioned | Yes | Not mentioned | No other named | github.com · humansignal.com | |
| Online, or on your own computers, even ones with no internet connection | Not mentioned | Not mentioned | Not mentioned | Yes | CCPA | cvat.ai | |
| Your files remain in your own Amazon account; service is only online at Amazon | Not mentioned | Not mentioned | Not mentioned | Yes | No other named | aws.amazon.com · docs.aws.amazon.com | |
| Online; your own computers on the top plan | (the type isn't stated) | Not mentioned | Yes | Not mentioned | No other named | roboflow.com · security.roboflow.com | |
| Runs online, though it can work with files kept on your own computers, even those with no internet connection | Type II | Yes | Not mentioned | Yes | No other named | dataloop.ai · docs.dataloop.ai | |
| Reading files from your own Amazon account is possible; it runs online | Not mentioned | Yes | Not mentioned | Yes | No other named | docs.segments.ai/security.md · docs.segments.ai/cloud-integration.md | |
| Your own computers under the top plan, or online | Not mentioned | Not mentioned | Yes | Yes | No other named | supervisely.com |
Keeping files on systems you own: VPN, private cloud and on-premises
Where files must stay on your own computers, operate the labeling platform there yourself; people often use the name on-premises for that setup. According to these platforms, you can run them on computers you own or inside a private cloud, meaning online space controlled by you alone: Roboflow, Encord, Dataloop, V7 Darwin, Supervisely, Label Studio, CVAT, Kili Technology.
When you want a company's staff to do the work, ask whether they can reach your computers over a safe connection (a VPN, which is a private, locked link across the internet) and do the work there. This keeps your files with you; they are never copied to the company's machines. Appen, iMerit and Cogito Tech describe secure offices for private data.

Before you send files: papers to ask for
- Get the SOC 2 Type II report in full. In most cases, a company sends it once you have agreed to keep it private. See which months it covers, and which services of theirs were checked.
- Ask for the certificate for ISO 27001. Look at the work it covers, which firm issued it and when it runs out.
- Before any patient records move, a contract covering them, called a business associate agreement. HIPAA, the US medical privacy law, requires that protection, and the company commits to it under this contract.
- When your files hold personal details of people in Europe: a contract about those details, called a data processing agreement. It sets out what the company may do with them; the European privacy law requires one under the GDPR rule.
- Ask where the people doing the labeling are based, and whether any of the work is passed to other companies.
- Ask how your files are deleted once the job ends, and what proof you receive.
Another option is a small trial job first, to see whether the labels are right: follow the steps to check labels. For medical files, begin with medical data annotation.
Additional guides
Annotation quality metrics.Ways to measure whether the labels you receive are correct, with worked examples.
QA workflow for data annotation.Checking labels step by step, plus what a small trial job should test.
Data labeling outsourcing.Prices, small trial projects and contracts for work where another company labels your data.
Want companies to quote against these rules? Describe the job once, and up to three annotation companies reply with prices.
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