Alex Stamos is joining Cognition as its new chief security officer; he most recently oversaw security at AI security startup Corridor and SentinelOne (Sam Sabin/Axios)
Alex Stamos has been appointed as the new chief security officer at Cognition. He previously held senior security roles at the AI security startup Corridor and SentinelOne. This move marks his latest leadership position in the cybersecurity sector.
- ▪Alex Stamos is joining Cognition to serve as its chief security officer.
- ▪Stamos most recently oversaw security operations at the AI security startup Corridor.
- ▪He also previously held a security leadership role at SentinelOne.
- ▪The announcement was reported by Sam Sabin for Axios.
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| Original publisher | Techmeme |
| Canonical URL | https://www.techmeme.com/260930/p34#a260930p34 |
| Publication time | Wed, 30 Sep 2026 12:00:56 -0400 |
| Retrieval time | 2026-09-30T16:02:02.160Z |
| Last seen | 2026-09-30T16:02:02.160Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | 3JsDy8aHxxWQ · 1 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
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About This Page This is a Techmeme archive page. It shows how the site appeared at 12:00 PM ET, September 30, 2026. The most current version of the site as always is available at our home page. To view an earlier snapshot click here and then modify the date indicated. From Mediagazer Alex Weprin / The Hollywood Reporter: Condé Nast CEO Roger Lynch is stepping down after 7.5 years to become the CEO and chairman of Mattel; lead independent director Mike Perlis will be interim CEO Andrea González-Ramírez / The Cut: Q&A with two Cornell Daily Sun student journalists on breaking the news of a suit alleging seven students raped a woman, followed by a fiery editorial, and more Joe Flint / Wall Street Journal: Sources: David Ellison has picked HBO content chief Casey Bloys to oversee streaming…
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