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DeepSeekHow safe is DeepSeek for cybersecurity?
DeepSeek has a concrete GDPR concern. The DeepSeek service stores personal data in China and was blocked by the Italian regulator in January 2025. Advised against for regulated sectors, unless you host the model yourself within the EU. Weigh this heavily before deploying it in cybersecurity.
Where does DeepSeek stand in cybersecurity?
Shared position 19 of 25 options for cybersecurity (professional tools and general assistants) on GDPR profile. 7 options, like DeepSeek, have a Caution profile. Each tile is an option we track for this field; click for the check.
Published safeguards
The DeepSeek service stores data in China and uses it for training by default (with an opt-out). Only an EU self-hosted variant of the open weights is defensible for sensitive data.
How to use DeepSeek safely
- Use the business variant and sign a data processing agreement (DPA).
- Do not enter unnecessary personal data into prompts; anonymise where possible.
- Ask the provider explicitly where data is stored and processed.
- Keep a professional in the loop: a security tool sees everything: log files, emails, usernames and network traffic.
Stronger or equally strong in cybersecurity
SoSafeSoSafe SE (Cologne, Germany)Aikido SecurityAikido Security BV (Ghent, BE)Eye SecurityEye Security (The Hague, Netherlands)HadrianHadrian Security B.V. (Amsterdam, Netherlands)SekoiaSekoia (Rennes, France)Latest developments
On 21 August 2026, DeepSeek launched an experimental multimodal version of V4 Flash (V4-Flash-Vision-Exp) that processes text and images as input. The model is available exclusively via the hosted API (no open weights); calls are processed on servers in China. There is no EU adequacy decision for China, and DeepSeek has not published Standard Contractual Clauses for EU transfers. For applications where personal data is entered, including via images, such as invoices, patient documents or identity documents, direct API use is not GDPR-defensible. GDPR-compliant alternatives: (1) waiting for open weights and self-hosting on EU infrastructure, (2) use via Microsoft Azure AI Foundry with EU data residency (available for earlier DeepSeek variants). Price: $0.22/$0.66 per million tokens (off-peak), double rate at peak times. source
DeepSeek V4 Pro 0813 moved out of preview to general availability on 13 August 2026. The model (1.6T parameters MoE, 1M context window) is available via the official DeepSeek API at $0.435 per 1M input tokens, but DeepSeek has announced a significant price increase in the near future. GDPR relevance: the cloud API stores data in China; there is no EU adequacy decision. For business use: (1) EU self-hosting on open weights, or (2) use via Microsoft Azure Foundry (EU residency available since May 2026) are the GDPR-defensible routes. Direct API use by organisations in regulated sectors (healthcare, legal, financial) remains not recommended. source
The Garante imposed a processing restriction on DeepSeek over inadequate answers on data processing and storage in China. source
Questions
- How safe is DeepSeek for cybersecurity?
- DeepSeek has a concrete GDPR concern. The DeepSeek service stores personal data in China and was blocked by the Italian regulator in January 2025. Not recommended for regulated sectors, unless you host the model yourself within the EU. Weigh this heavily before using it in cybersecurity. There is a concrete GDPR concern, read the details on the page.
- Does DeepSeek train on my data?
- The DeepSeek service stores data in China and uses it for training by default (with an opt-out). Only an EU self-hosted variant of the open weights is defensible for sensitive data.
- What should I watch out for with AI in cybersecurity?
- A security tool sees everything: log files, emails, usernames and network traffic. That is personal data, so you need a data processing agreement and must know where the data is stored. Also ask whether the AI assistant is trained on your data. WithSecure (Finland) says it processes data for Luminen in AWS in Europe and does not train foundation models on customer data. Sekoia stores data in Germany or elsewhere in the EU/EEA and is ISO 27001 certified. SoSafe (France) can run self-hosted. With Microsoft Security Copilot you choose the geo of your workspace, but sharing data with Microsoft is on by default. For Charlotte AI, ESET LiveAI and Mindgard the hosting location is not public. Never let an agent act on production systems without analyst approval, and record who makes the 24-hour report under the Cybersecurity Act when an incident occurs.
Source documents
Everything about DeepSeek Best AI for cybersecurity
Summarised by the editorial team from provider documentation · not legal advice
Last checked: 23 October 2026 · How we check
Source: , checked on 23 October 2026
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