Atsign
Cybersecurity · AI Agents
$11Mlatest round · Venture round · May 2021 · 5 yr ago
10+team · employees, estimated range
40stories in the press
2019founded
Overview
Build secure apps and protect infrastructure with cryptographic identity. Connect devices, AI agents, and systems across any network—zero open inbound ports.
Funding and backers
Total raised
$11M
1 round on record
Latest round
$11M
Venture round · May 2021 · 5 yr ago
Team
11-50
employees, estimated range
The money's age
Long since its last round
65 months since the last round · not hiring
Momentum
15/100
in the news
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Sep 2
Partnership NeXasure and Atsign Partner to Help Organizations Reduce Exposed Infrastructure and Strengthen Cyber Resilience · The Manila Times
Apr 16
New executive Atsign Appoints Cybersecurity and Cloud Leader Aparna Rayasam as CEO to Lead Next Phase of Enterprise Security in the AI Era · The Manila Times
Feb 26
Launched Atsign Launches AI Architect for Secure Agentic AI Development · TechIntelPro
Apr 29, 2025
Partnership Atsign and S-IMSY Partner to Deliver Cost-Effective IoT Solutions with Security Through Invisibility · YahooFinance
Apr 14, 2025
Launched Atsign introduces Invisible RDP powered by NoPorts technology · DCDNoticias
Feb 18, 2025
Launched Atsign Unveils First Invisible Cloud on Oracle Cloud Infrastructure · CIO Influence
Jul 31, 2024
Partnership Digi International and Atsign Collaborate to Secure Industry 4.0 with NoPorts on Digi IX40 Cellular Routers · businesswire
Dec 6, 2023
Launched Atsign releases SSH No Ports 4.0 with Windows support and SDK · Help Net Security
May 21, 2021
Raised a round Venture round $11M · SEC Form D
2019
Founded
Tractionpublic signals, read monthly
Hacker News stories
2
best: 2 points
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | May 2021 | $11M | — | SEC Form D |
Registers and programsofficial lists and records that name the company
| Legal entity | Atsign, Inc. | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
Colin ConstableExecutive Officer, DirectorSEC Form D
Barbara TallentExecutive Officer, DirectorSEC Form D
Kevin NickelsExecutive OfficerSEC Form D
Investors in similar startupsfunds that back the companies most like this one
Similar startupsby what they do, their industry and backers
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Financials
Total raised
$11M
Latest round
Venture - Series Unknown
Funding rounds
1
Funding rounds
| Round | Announced | Amount | |
|---|---|---|---|
| Venture - Series Unknown | 2021 | $11M | Details |
People
Colin Constable
Executive Officer, Director
Barbara Tallent
Executive Officer, Director
Kevin Nickels
Executive Officer
Henna Karna
Director
Kirk Brown
Director
Kim Perdikou
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
News
Building an Agentic Control Plane for Large-Scale Networks - Atsign Triple-T
Network engineers have long dreamed of a control plane spanning an entire domain. Routing protocols already give us distributed, self-healing control, yet configuration remains static, hand-crafted, and brittle. This talk asks what happens when autonomous
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Report
Security Engineering Shifts Toward Automated, System-Level Defenses
Chris Swan of Atsign and QCon London's security track host outlined how CHERI hardware memory safety, EU Cyber Resilience Act SBOM mandates, and post-quantum cryptography will reshape the security landscape as AI agents amplify both attack and defense cap
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Report
Future Cybersecurity: Hardware Memory Safety, Automated Governance and Post-Quantum Cryptography
In this episode, Chris Swan, engineer at Atsign and security track host at QCon London, reflects on the ideas shared during QCon London 2026 and teases topics of the future edition. The discussion explores how security engineering is shifting from relying
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Report
88x edge-AI encryption boost from Atsign and Intel will benefit smart transportation
Cybersecurity firm Atsign and Intel have announced a hardware and identity-management collaboration that they say delivers up to an 88-fold increase in the speed of encrypted communications between AI
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Report
Intel secures AI agents at the edge for autonomous ride performance
Collab with Atsign affirms agentic encryption for smart city robotaxis
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Report
Atsign and Intel solve the Edge AI encryption conundrum
Trusted identity management/hardware acceleration tie-up improves performance by approximately 8700%, eliminating a major barrier to smart transportation systemsSAN JOSE, Calif., Sept. 10, 2026 (GLOBE NEWSWIRE) -- Atsign today announced that, with Intel,
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Report
NeXasure and Atsign Partner to Help Organizations Reduce Exposed Infrastructure and Strengthen Cyber Resilience
The partnership combines NeXasure's AI-driven threat defense and advisory services with Atsign's identity-first secure communications platform, NoPorts, and secure-by-design application workflow
Read more
Report
July 28, 2026 Forget Flash Gordon Tech Trailblazers Really Can Save The Earth (in less than 14 hours)
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Report
Atsign adds AI architecture tools for enterprise teams
Enterprise teams can now define AI agent permissions and security controls earlier, as Atsign's update links live architecture design with model prompting.
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Report
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Offices
Where the company hires and what each office is for
Cities
1
Hiring now
0
Countries
1
San Jose
United States
HQ
10-50 est. staff