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Seraphic Security announced a $29 million Series A on January 30, 2025, to develop its browser-security product and expand in North America and EMEA. GreatPoint Ventures led the round, joined by CrowdStrike’s Falcon Fund and existing investors. The company later became part of CrowdStrike: the cybersecurity company reported completing its acquisition of Seraphic’s remaining 90.6% equity interest on February 3, 2026.
Who invested in Seraphic’s $29 million round?
Seraphic announced the Series A on January 30, 2025. GreatPoint Ventures led the financing. Participants included the CrowdStrike Falcon Fund and existing investors Planven, Cota Capital, Storm Ventures, Eastlink and Secure Octane. Seraphic said it would use the money to advance its product roadmap and expand in North America and EMEA. Seraphic’s announcement and SecurityWeek’s report covered the round that day.
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The announcement also said Seraphic’s annual recurring revenue had increased 300% year over year and that Fortune 500 adoption was growing. That is a company-reported growth figure: the release did not specify the comparison period or disclose revenue amounts. It is not a measure of profit, cash raised or customer count.
A separate 2024 Frost & Sullivan report said Seraphic had acquired more than 60 customers within two years of launch. That customer count is distinct from the company’s ARR-growth claim.
#1 Best Overall
- POWERFUL SECURITY KEY: The Security Key C NFC is the essential physical passkey for protecting your digital life from phishing attacks. It ensures only you can access your accounts.
- WORKS WITH 1000+ ACCOUNTS: Compatible with Google, Microsoft, and Apple. A single Security Key C NFC secures 100 of your favorite accounts, including email, password managers, and more.
- FAST & CONVENIENT LOGIN: Plug in your Security Key C NFC via USB-C and tap it, or tap it against your phone (NFC) to authenticate. No batteries, no internet connection, and no extra fees required.
- TRUSTED PASSKEY TECHNOLOGY: Uses the latest passkey standards (FIDO2/WebAuthn & FIDO U2F) but does not support One-Time Passwords. For complex needs, check out the YubiKey 5 Series.
- BUILT TO LAST: Made from tough, waterproof, and crush-resistant materials. Manufactured in Sweden and programmed in the USA with the highest security standards.
What was Seraphic selling to enterprise customers?
Seraphic’s pitch was to secure browser activity without requiring an organization to replace its users’ browsers with a dedicated secure browser. The company described a patented abstraction layer that monitors, randomizes and secures the browser, with protection and detection capabilities. It said the approach could cover browsers and SaaS desktop applications, and support access to SaaS and private web apps from managed and personal devices.
The intended business case was to add browser security while reducing reliance on virtual desktop infrastructure (VDI) and the complexity of virtual private network (VPN) access. SecurityWeek described the company’s claims as addressing zero-day browser exploits, phishing and other browser-based attacks without requiring a separate secure browser or rerouting traffic. These are descriptions of the product’s positioning, not independent findings that it prevents attacks or outperforms alternatives.
Rank #2
- POWERFUL SECURITY KEY: The YubiKey 5C NFC is the most versatile physical passkey, protecting your digital life from phishing attacks. It ensures only you can access your accounts
- WORKS WITH 1000+ ACCOUNTS: Compatible with popular accounts like Google, Microsoft, and Apple. A single YubiKey 5C NFC secures 100+ of your favorite accounts, including email, password managers, and more
- FAST & CONVENIENT LOGIN: Plug in your YubiKey 5C NFC via USB and tap it, or tap it against your phone (NFC), to authenticate. No batteries, no internet connection, and no extra fees required
- MOST SECURE PASSKEY: Supports FIDO2/WebAuthn, FIDO U2F, Yubico OTP, OATH-TOTP/HOTP, Smart card (PIV), and OpenPGP. That means it’s versatile, working almost anywhere you need it
- PRIMARY & SPARE KEYS: Just like having a spare house key, we recommend buying two YubiKeys - one for daily use and one as a spare. That way you’ll never get locked out of your accounts
Why the browser mattered to the investment thesis
As organizations rely on web-based software and employees work across locations and devices, the browser becomes a route to business applications and data—and a potential point of exposure. Seraphic and its investors argued that securing this layer could complement other enterprise security controls. Their statements show the rationale behind the financing, but they are interested parties rather than independent assessments. In the funding release, Seraphic CEO and co-founder Ilan Yeshua called the investment recognition of demand for mitigating browser vulnerabilities while reducing security-architecture cost and complexity. CrowdStrike President Michael Sentonas said browsers had become a critical attack surface as SaaS use and hybrid work grew. GreatPoint Ventures Managing Partner Ray Lane said browsers dominate enterprise work but are not secure enough.
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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesHow did Seraphic’s product develop?
Frost & Sullivan’s 2024 report described products Seraphic released in 2023: an embedded browser for unmanaged devices, an Electron agent for collaboration and productivity tools, a mobile product for Android and iPhone, and a transparent proxy. It discussed potential use cases for organizations with SSE/SASE (security service edge/secure access service edge), organizations with endpoint detection and response (EDR) but no SSE/SASE, and buyers considering alternatives to remote browser isolation. This is a dated account of product history and use cases, not a verified current feature checklist.
Rank #3
- FIDO2 & Passkey Ready: Business-ready and FIDO2 L1 certified. This key is supported by major management suites and is ideal for both individual and enterprise deployment. Works seamlessly with Gmail, Facebook, GitHub, Dropbox, Coinbase, and more.
- Dedicated Manager App: Use the Thetis Manager App for the initial hardware PIN setup. Setting the PIN on the device first ensures a smooth registration process. Once the PIN is configured, you can begin registering the key across your favorite FIDO2-compatible online services.
- USB TYPE C Connectivity & DONGLE Design: Designed for PCs, Macs, laptops, iPhones, and Android devices that utilize a USB-C port. Plug and stay, or carry it on a keychain. (Item Size: 0.73 x 0.60 x 0.30 inches)
- Enhanced MFA (FIDO2 & TOTP/HOTP): Strengthen your security with flexible options. Use the Manager App to access TOTP/HOTP features for accounts that do not yet support FIDO2.
- Check FIDO2 compatibility before purchase - Known limitations: ID Austria is not supported (requires FIDO2 Level 2). Windows Hello login only works with Windows Enterprise editions that support Entra ID. NFC functionality is not supported.
The report said Seraphic had secured four patents and had 17 additional patent applications at different stages. The applications should not be counted as granted patents.
What happened to Seraphic after the funding round?
CrowdStrike reported in a SEC filing for the period ended July 31, 2026 that it completed its acquisition of the remaining 90.6% equity interest in Seraphic Algorithms Ltd. on February 3, 2026. CrowdStrike’s Falcon Funds had held the other 9.4% before the acquisition. The 2025 financing therefore should not be read as the latest ownership news or as leaving Seraphic independent.
Rank #4
- POWERFUL SECURITY KEY: The Security Key NFC is the essential physical passkey for protecting your digital life from phishing attacks. It ensures only you can access your accounts.
- WORKS WITH 1000+ ACCOUNTS: Compatible with Google, Microsoft, and Apple. A single Security Key NFC secures 100 of your favorite accounts, including email, password managers, and more.
- FAST & CONVENIENT LOGIN: Plug in your Security Key NFC via USB-A and tap it, or tap it against your phone (NFC) to authenticate. No batteries, no internet connection, and no extra fees required.
- TRUSTED PASSKEY TECHNOLOGY: Uses the latest passkey standards (FIDO2/WebAuthn & FIDO U2F) but does not support One-Time Passwords. For complex needs, check out the YubiKey 5 Series.
- BUILT TO LAST: Made from tough, waterproof, and crush-resistant materials. Manufactured in Sweden and programmed in the USA with the highest security standards.
The filing reports $327.5 million in cash consideration, net of $1.1 million in cash and restricted cash acquired, plus $13.7 million in fair value for replacement equity awards tied to pre-acquisition service. These are components described in the filing, not a simple, unqualified headline purchase price; the filing also notes that the purchase-price allocation and related accounting estimates were preliminary.
How should buyers assess enterprise browser security?
SecurityWeek’s January 2025 report named Surf, SlashNext, LayerX and Red Access among competitors and described a broader choice between dedicated enterprise browsers, security layers designed to work with existing browsers, and capabilities offered by larger platform vendors. That is a dated market snapshot, not a complete competitor list for 2026. The sources cited here do not provide current independent product scores or apples-to-apples testing, so buyers should compare products against their own environment and requirements.
Best Value
- MULTI-APPLICATION SECURITY KEY FOR ENTERPRISE USE: Supports FIDO2 passkeys, U2F, Smart Card (PIV), and OTP for flexible authentication across enterprise environments.
- PHISHING-RESISTANT AUTHENTICATION: Enables passwordless login with secure credential storage and PIN-based user verification.
- COMPATIBLE WITH ENTERPRISE SYSTEMS: Works with FIDO2, WebAuthn, U2F, PIV, and OTP across enterprise, cloud, and identity infrastructure.
- DRIVERLESS FIDO2 AUTHENTICATION: FIDO2 works natively with modern browsers and platforms. Additional software may be required for PIV or OTP
- USB AND NFC CONNECTIVITY: Supports authentication via USB-C and NFC. No batteries or drivers required for FIDO2.
- Browser strategy: Does protection require a dedicated browser, or can it work with browsers already in use?
- Application and device coverage: Does it address browser tabs, desktop SaaS or Electron applications, and mobile use? How does it handle unmanaged or third-party devices?
- Threat and data controls: What protection is provided for phishing, browser exploits and data loss, and how are those capabilities validated?
- Private-app access: How does the product work with existing SSE/SASE, EDR, VDI and VPN arrangements?
- Deployment impact: What user friction, operational work and total cost would adoption add or remove?
The sources reviewed do not establish a specific, independently published market-size estimate for enterprise browser security. A broad claim that the market is worth “billions” should not be treated as substantiated by these sources.
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