C/side

Application SecuritySan Francisco, United Statesfounded 2024privatecside.com ↗

C/side is a cybersecurity company specializing in Application Security, founded in 2024 and headquartered in San Francisco, United States. It has raised $7.7M in equity across 2 priced rounds, employs about 16 people, and is privately held.

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updated Oct 11, 2026

Latest C/side news and company activity

What C/side did, dated — selected moves from the record, one per kind, newest first.

Aug 2026Hiring surgeCside Experiences Significant Headcount Growth
Aug 2025Recognitioncside Emerges as Go-To Defense Against the Fastest-Growing Threat to Web Security
Apr 2025PartnershipEXCLUSIVE: c/side Launches First Partner Program
Sep 2024Funding roundC/side raises $6M to prevent supply chain attacks by securing third-party scripts

C/side Momentum score

50/ 100

Mandos Momentum blends hiring, funding, traffic and sentiment into one score out of 100. The score is free; the pillars behind it unlock in the platform.

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C/side products

c/sideClient-side platform securing browser scripts, detecting fraud & ensuring PCI compliance.Details ↗

C/side funding

C/side has raised $7.7M in priced equity. Its most recent round was a Seed in September 2024.

Equity raised: $7.7M2 priced rounds
Last round: SeedSep 2024

View the complete funding history

C/side employees and hiring

C/side has about 16 employees, down 20% over the last 30 days.

Employees: 16
30-day change: -20%
Open roles: 0

See hiring trends

C/side competitors

Security professionals most often compare C/side against Akamai and Arcjet on cybersectools.com. The full competitive set, with overlap scoring, is in the platform.

ranked by CybersecTools comparison demand, 90 days

View the competitive set with overlap scores

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The other 440 data points.

Funding historyevery round, every investor named
Headcount growthvelocity, departments, seniority
Open jobslive postings, hiring pace, role mix
Tech stackframeworks, clouds, security
Competitorsfull set, overlap scored
Leadershipevery exec, with roles
Customersnamed publicly, with sources
Reviews & newssentiment, coverage, cadence

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Funding, round by round, with the investors
Headcount, hiring and the people
The timeline of what they did, dated
The Mandos Brief every Monday

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The other 440 data points.

Funding historyevery round, every investor named
Headcount growthvelocity, departments, seniority
Open jobslive postings, hiring pace, role mix
Tech stackframeworks, clouds, security

Similar in Application Security

Common questions about C/side.

How much funding has C/side raised?: C/side has raised $7.7M in priced equity. Its most recent round was a Seed in September 2024.
How many people work at C/side?: C/side has about 16 employees, down 20% over the last 30 days.
Who are C/side's competitors?: Security professionals most often compare C/side against Akamai and Arcjet on cybersectools.com. The full competitive set, with overlap scoring, is in the platform.
What does C/side do?: C/side is a cybersecurity company specializing in Application Security, founded in 2024 and headquartered in San Francisco, United States.
What products does C/side sell?: C/side sells c/side.