We're a cybersecurity company that's on a mission to empower any team to defend against every attacker.
Location: United States, California, Santa Clara
Employees: 11-50
Total raised: $69.5M
Founded date: 2019
Investors 3
| Date | Name | Website |
| - | S32 | s32.com |
| 22.09.2021 | Sequoia Ca... | sequoiacap... |
| 29.10.2020 | Gradient V... | gradient.c... |
Funding Rounds 3
| Date | Series | Amount | Investors |
| 14.10.2022 | Series B | $45M | - |
| 22.09.2021 | Series A | $20M | - |
| 30.10.2020 | Seed | $4.5M | - |
Mentions in press and media 21
| Date | Title | Description |
| 12.05.2025 | Tesseral: $3.3 Million Raised To Simplify Authentication For Business Software | Tesseral, an open-source authentication infrastructure for business-to-business (B2B) software companies, announced its emergence from stealth with $3.3 million in seed financing. Investors include Y Combinator, Jessica Livingston, and Paul... |
| 07.05.2025 | Tesseral's $3.3M Seed Funding: A New Dawn for B2B Authentication | In the bustling tech landscape of San Francisco, a new player has emerged, ready to tackle one of the most persistent challenges in software development: authentication. Tesseral, a startup focused on providing open-source authentication in... |
| 06.05.2025 | Tesseral Raises $3.3M in Seed Funding | Tesseral Co-founders Tesseral, a San Francisco, CA-based authentication infrastructure for B2B software companies, raised $3.3M in Seed funding. Backers included Y Combinator, Jessica Livingston and Paul Graham, co-founders of Y Combinator,... |
| 28.06.2023 | Stairwell Now Available on Google Cloud Marketplace | Stairwell, a leading cybersecurity company that is redefining how organizations approach threat detection and response announced that the Stairwell platform is now available on Google Cloud Marketplace. Latest Insights: How to Get Started w... |
| 13.10.2022 | California-based startup Stairwell raises USD 45 million in Series B funding | MOUNTAIN VIEW, Calif., Oct. 11, 2022 — Stairwell announced a USD 45M Series B investment today by Stairwell, a firm that equips security teams to outwit any attacker. Section 32 served as the lead investor in the capital round. Sequoia Capi... |
| 12.10.2022 | Stairwell Announces $45 Million Series B Funding Round | Stairwell, a company that empowers security teams to outsmart any attacker, announced a $45 Million Series B capitalization. The funding round was led by Section 32, with additional investments from Sequoia Capital, Accel, Lux Capital, Grad... |
| 11.10.2022 | Stairwell Raises $45M in Series B Funding | Stairwell, a Mountain View, CA-based company that empowers security teams to outsmart any attacker, raised $45M in Series B funding. The round was led by Section 32, with participation from Sequoia Capital, Accel, Lux Capital, Gradient Vent... |
| 11.10.2022 | Stairwell Announces $45M Series B | MOUNTAIN VIEW, CA, Stairwell, a company that empowers security teams to outsmart any attacker, announced a $45M Series B >> Click here for more funding data on Stairwell >> To export Stairwell funding data to PDF and Excel, ... |
| 27.09.2022 | New Ransomware-Enhancing Method Tested by Hackers; Technique Could Make Data Irretrievable | Griffin Davis , Tech Times 27 September 2022, 09:09 am A new ransomware-enhancing method is being tested by hackers. This new technique is believed to improve ransomware attacks. (Photo : Photo by NICOLAS ASFOURI/AFP via Getty Images) In th... |
| 06.07.2022 | US government says North Korean hackers are targeting American healthcare organizations with ransomware | The FBI, CISA and the U.S. Treasury Department are warning that North Korean state-sponsored hackers are using ransomware to target healthcare and public health sector organizations across the United States. In a joint advisory published We... |
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