Act Security

Actionable Cloud Risk-reduction for Security Teams

Cyber Security
Active
Series A Founded 2025
Total raised
$60.0M
Last: Series A 2025-12
Stage
Series A
Founded
2025
Headcount
30
HQ
Sector
Cyber Security

About

Act Security is developing a platform for securing cloud infrastructure and data centers.

Funding history · 2 rounds · $60.0M total

2025-12
Series A $40.0M
2025-08
Seed $20.0M

Company Intelligence Q&A

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When was Act Security founded?
Act Security was founded in August 2025.
What is Act Security's primary focus?
Act Security is developing a platform for securing cloud infrastructure and data centers, focusing on actionable cloud risk-reduction for security teams.
Who are the founders of Act Security?
The founders of Act Security are Jonathan Langer, Stephan Goldberg, Itay Kirshenbaum, and Ilai Fallach.
How much funding has Act Security raised in total?
Act Security has raised a total of $60,000,000 USD.
When did Act Security close its Seed funding round and who were the lead investors?
Act Security closed its Seed funding round in August 2025, with investors including Bessemer Venture Partners, Team8, and Hetz Ventures.
When did Act Security close its Series A funding round and who was the lead investor?
Act Security closed its Series A funding round in December 2025, with Notable Capital as the lead investor.
What is the current employee count for Act Security?
Act Security currently has 30 employees.
What is the significance of Act Security's Series A round in relation to its Seed round?
Act Security closed a rapid Series A round in December 2025, only four months after its $20 million Seed round in August 2025.

Sectors & technology

Primary sector
Cyber Security
Sub-sectors
Cyber SecurityCloud Security
Target customers
Enterprise & Professional ServicesITData CentersEnterprises
Business model
B2B

Highlights

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