Canadian AI lab Cohere said on Thursday it has signed a letter of intent to buy AISLE, a San Francisco cybersecurity startup that uses AI to find flaws in software. Why it matters: the deal would add a security business to the much larger company Cohere is assembling, at a moment when AI is creating new attack surfaces as fast as it creates new defenses.
October 15, 2026
What happened?
Cohere announced the planned acquisition on Thursday, October 15. AISLE would join the group Cohere is forming through its merger with German AI company Aleph Alpha, a combination reported to be worth about $20 billion. The financial terms of the AISLE deal were not disclosed, and a letter of intent is a preliminary step rather than a completed purchase.
What does AISLE actually do?
AISLE builds AI tools that hunt for vulnerabilities in widely used software. The startup says its system found more than 500 previously unknown bugs in its first year. That total included 12 flaws in OpenSSL, the open-source encryption library relied on by banks, governments and messaging services. Those OpenSSL issues were fixed after AISLE reported them.
The company was founded in 2025 by Ondrej Vlcek, the former chief executive of Czech antivirus maker Avast, together with co-founders who previously worked at Google DeepMind and Anthropic. Its engineering base in Prague would extend Cohere’s footprint in Europe, something Cohere highlighted in announcing the deal.
Why does Cohere want a security startup?
Cohere sells AI models and platforms to enterprise and public-sector customers, often with private deployment on a customer’s own systems. Adding AISLE is aimed at strengthening the combined group’s security and threat-detection offer for exactly those buyers. Cohere framed the move as continued investment in Europe and argued that defensive tools need to keep pace as AI systems grow more capable and reshape the threats organizations face.
Why it matters
For buyers, this is consolidation with a practical point. Large organizations are being asked to trust AI vendors with sensitive work, and vendors are responding by buying security capability rather than just promising it. If the deal closes, Cohere’s pitch to governments and regulated industries gets a dedicated vulnerability-hunting team behind it. The test, as always, is follow-through: a letter of intent is not a closed deal, and no price has been shared.
Frequently asked questions
Is the Cohere-AISLE deal complete?
No. Cohere has signed a letter of intent, which signals a planned purchase. Terms were not disclosed.
Who founded AISLE?
AISLE was founded in 2025 by former Avast chief executive Ondrej Vlcek, with co-founders from Google DeepMind and Anthropic.
Why is OpenSSL significant?
OpenSSL encrypts internet traffic for many banks, governments and messaging apps, so vulnerabilities in it can have unusually wide reach. AISLE says it found 12 such flaws, which were then fixed.
Sources: Reuters