Is HiddenLayer profitable in 2026?

HiddenLayer has not disclosed profitability. Third-party estimates put 2024 revenue near $42M (UpMarket and Datanyze, both undated 2026 listings), while the company remains privately held with no IPO filing as of April 2026, per Forge Global.

Has HiddenLayer raised new funding recently?

No. HiddenLayer closed a $50.25M Series A on February 20, 2024, led by M12 and Moore Strategic Ventures. As of June 29, 2026, Crustdata reported it had been 34 months since any new round, with no Series B announced.

Who are HiddenLayer's biggest competitors?

Its closest AI security peers, Protect AI and Robust Intelligence, were both acquired: Cisco bought Robust Intelligence (announced October 14, 2024) and Palo Alto Networks bought Protect AI (completed July 22, 2025), leaving HiddenLayer among the last independent pure play rivals.

Could AI replace HiddenLayer?

No, HiddenLayer's core business, AI model security, grows alongside AI adoption rather than being displaced by it. The bigger threat is hyperscalers like AWS, Databricks, and Microsoft bundling basic detection features natively, which could compress its low-end market over time.

Who owns HiddenLayer?

HiddenLayer is privately held and venture backed. It was founded in March 2022 by Christopher Sestito, Jacob Rideout, James Ballard, and Tanner Burns. Investors include Microsoft's M12 fund, Moore Strategic Ventures, Booz Allen Ventures, IBM Ventures, and Capital One Ventures from its Series A.

Will HiddenLayer get acquired?

No acquisition has been announced as of July 21, 2026. Given peers Protect AI and Robust Intelligence were both bought by Palo Alto Networks and Cisco, and HiddenLayer has not raised funds in 34 months as of June 2026, analysts view an acquisition or Series B as likely within 6 to 18 months.

AI companies and labs · United States

HiddenLayer

hiddenlayer.com ↗

HiddenLayer sells security tools that detect attacks on AI models and machine learning systems.

Losing its protection

Assessed 21 July 2026 · Evidence as of 21 July 2026

The structural protection is eroding.

On the recordSince 21 July 2026 · Checkable from late 2026 · Every call on the record Checkpoint: Window for a Series B or acquisition announcement, per repeated funding silence since Feb 2024

The call

HiddenLayer still holds federal accounts and real technology, but its two closest rivals got bought by Palo Alto and Cisco while its own growth and funding have stalled.

HiddenLayer sells software that protects artificial intelligence systems from attacks and tampering, and it makes real money serving U.S. government and defense agencies. The hard part is that two of its closest competitors, Protect AI and Robust Intelligence, were already bought by Palo Alto Networks and Cisco, which are now selling their own AI security products to the same customers. HiddenLayer hasn't raised new money in nearly three years, its team barely grew, and fewer people visit its website, which suggests the company is either running out of time to find new investors or will be acquired by one of the large tech companies that is already moving into this space.

Why

AI pressure: None apparent. AI adoption grows HiddenLayer's market rather than replacing it, since more AI models in use means more surfaces to defend. Could AI do the core job? Unlikely.

Bigger players: Palo Alto Networks (Prisma AIRS, via Protect AI acquisition) and Cisco (Security Cloud, via Robust Intelligence acquisition). Both giants bought HiddenLayer's closest rivals and now sell overlapping model security features bundled into platforms customers already own. Could a giant copy it? Yes, easily.

What protects it. Federal contract access (DoD Tradewinds, Missile Defense Agency work) and deep integrations that are slow for buyers to rip out.

What would change this call

HiddenLayer announces a Series B or is acquired within 6 to 18 months. Confirms whether it can survive independently or joins peers inside a larger platform.
Palo Alto or Cisco publicly names HiddenLayer federal or enterprise accounts they won in H2 2026. Would show incumbents actively displacing HiddenLayer in its core installed base.
HiddenLayer headcount and web traffic trend through late 2026. Reversal of the current stall versus continued shrinkage signals momentum or decline.

Key numbers

No new funding round in 34 months (June 2026)
Web traffic down 42% quarter over quarter (June 2026)
Headcount grew only 4.3% year over year to 170 people (June 2026)

Named risks

No new funding round in 34 months as of June 2026 while peers get acquired by giants. Severity: high
Web traffic reportedly fell 42% quarter over quarter as of June 2026. Severity: medium
Headcount growth stalled at only +4.3% year over year through June 2026. Severity: medium
Hyperscaler bundling of basic AI detection features could commoditize HiddenLayer's low end wedge. Severity: medium
Inconsistent headquarters listings across CB Insights, Datanyze, and press releases signal data reliability gaps. Severity: low

Rivals, as read in July 2026

Rival	Direction	Evidence
Palo Alto Networks	contesting	Launched Prisma AIRS April 28, 2025, overlapping HiddenLayer offerings after buying Protect AI, closed July 22, 2025
Cisco	contesting	Integrated acquired rival Robust Intelligence into Cisco Security Cloud, completed September 2024
Microsoft	contesting	M12 is a HiddenLayer investor yet Microsoft ships native AI security tooling that competes for the same buyers
Protect AI	losing to	Acquired by Palo Alto Networks July 22, 2025, removing it as an independent peer and adding scale to a rival
Robust Intelligence	losing to	Acquired by Cisco, announced October 14, 2024, folded into Cisco Security Cloud

Questions people ask

Is HiddenLayer profitable in 2026?: HiddenLayer has not disclosed profitability. Third-party estimates put 2024 revenue near $42M (UpMarket and Datanyze, both undated 2026 listings), while the company remains privately held with no IPO filing as of April 2026, per Forge Global.
Has HiddenLayer raised new funding recently?: No. HiddenLayer closed a $50.25M Series A on February 20, 2024, led by M12 and Moore Strategic Ventures. As of June 29, 2026, Crustdata reported it had been 34 months since any new round, with no Series B announced.
Who are HiddenLayer's biggest competitors?: Its closest AI security peers, Protect AI and Robust Intelligence, were both acquired: Cisco bought Robust Intelligence (announced October 14, 2024) and Palo Alto Networks bought Protect AI (completed July 22, 2025), leaving HiddenLayer among the last independent pure play rivals.
Could AI replace HiddenLayer?: No, HiddenLayer's core business, AI model security, grows alongside AI adoption rather than being displaced by it. The bigger threat is hyperscalers like AWS, Databricks, and Microsoft bundling basic detection features natively, which could compress its low-end market over time.
Who owns HiddenLayer?: HiddenLayer is privately held and venture backed. It was founded in March 2022 by Christopher Sestito, Jacob Rideout, James Ballard, and Tanner Burns. Investors include Microsoft's M12 fund, Moore Strategic Ventures, Booz Allen Ventures, IBM Ventures, and Capital One Ventures from its Series A.
Will HiddenLayer get acquired?: No acquisition has been announced as of July 21, 2026. Given peers Protect AI and Robust Intelligence were both bought by Palo Alto Networks and Cisco, and HiddenLayer has not raised funds in 34 months as of June 2026, analysts view an acquisition or Series B as likely within 6 to 18 months.

Timeline

2026-06-29Announced partnership with Cohere to secure its North enterprise agent platform
2026-06-17Joined Databricks Unity AI Gateway ecosystem
2026-05-18Disclosed CVE-2026-45829, a critical RCE flaw in ChromaDB
2026-04-21Granted patent for model output steering using universal images
2026-03-23Launched AI Runtime Security module for agentic AI
2026-03-18Released 2026 AI Threat Landscape Report
2025-07-22Palo Alto Networks completed acquisition of rival Protect AI
2025-07-17Appointed Chelsea Strong as Chief Revenue Officer
2025-04-28Palo Alto Networks announced intent to acquire Protect AI, launching Prisma AIRS
2024-10-14Cisco announced intent to acquire rival Robust Intelligence
2024-02-20Closed $50.25M Series A led by M12 and Moore Strategic Ventures
2022-03Founded by Christopher Sestito, Jacob Rideout, James Ballard, and Tanner Burns

Revision history

21 July 2026

First assessed. Losing its protection. The text above is fixed as of this date and is not edited afterwards.

In the same band

Safe Superintelligence Inc.Mistral AI Cohere