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Menlo Security
Cybersecurity · Mountain View, United States · Founded 2013
Eliminate web malware and stop spear phishing attacks with our secure isolation platform, removing malware and ransomware risks from email, web and document downloads MoreLess
Menlo Security is a cybersecurity startup that operates in the digital security market. The company provides a unique approach to online security, offering a platform that protects users from online threats, making these threats irrelevant to the users and their businesses. The platform works invisibly, safeguarding users wherever they go online, thus eliminating the constant barrage of security alerts.
Menlo Security serves a broad range of clients, including businesses that need to secure their online operations. The company's business model revolves around providing cloud-based browser security that prevents phishing and malware attacks on any browser and any device across a client's hybrid enterprise. This means that clients can safely navigate the internet without the fear of falling victim to cyber-attacks.
The company also offers Menlo Labs, a collective of elite security researchers that provide insights, expertise, context, and tools to help customers secure their online communications and collaborations. Menlo Labs also shines a light on known and unknown threats, providing an extra layer of security for clients.
One of Menlo Security's standout products is the HEAT Shield, an industry-first AI phishing and ransomware protection solution. This solution uses deep web session analysis combined with AI to block new and unseen phishing attacks before they can penetrate a client's network.
Menlo Security generates revenue by charging clients for access to its security platform and services. The company also offers a HEATcheck assessment that shows how evasive attacks can bypass typical security measures, providing clients with a clear understanding of their security vulnerabilities.
Keywords: Cybersecurity, Online Security, Phishing Protection, Malware Protection, AI Security, Browser Security, Hybrid Enterprise Security, Security Research, Ransomware Protection, Security Vulnerability Assessment.
Company overview
Menlo Security company information
The essential company record, classifications and operating signals in one place.
- Status
- Operational
- Founded
- 2013
- Headquarters
- Mountain View, United States
- Employees
- 463
- Open positions
- 2
- Dealroom signal
- 76.6
- Investment activity
- 1 companies · latest Feb 2025
- Capital deployed
- —
- Preferred round
- ACQUISITION
Valuation & funding
Menlo Security funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SERIES EOther financing | Nov 2020 | $100M | $400M | Vista Equity Partners · Neuberger Berman · JP Morgan | — |
| SERIES DOther financing | Jul 2019 | $75M | $300M | Sutter Hill Ventures · Engineering Capital · Osage University Partners · JP Morgan | — |
| SERIES COther financing | Dec 2017 | $40M | $160M | General Catalyst · Sutter Hill Ventures · Engineering Capital · American Express Ventures | ↗ |
| SERIES BOther financing | Feb 2016 | — | — | JP Morgan · JPMorgan Chase & Co | — |
| SERIES BOther financing | Jun 2015 | $35M | $140M | General Catalyst · Osage University Partners · JP Morgan · Sutter Hill Ventures | — |
| SERIES AOther financing | Nov 2014 | Osage University Partners · General Catalyst | — | ||
| SEEDOther financing | Jan 2014 | Engineering Capital · Osage University Partners | — | ||
| SPINOUTOther financing | Dec 2013 | University of California, Berkeley | — |
Growth signals
Menlo Security website traffic
Latest recorded traffic for Menlo Security is 490K monthly website visits, up 19.5% over the last three months. Menlo Security's team grew 4.8% over the past year.
Hiring
Open positions at Menlo Security
Current openings linked to this company in Dealroom.
Comparisons
Menlo Security compared with similar companies
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Capital deployed
Menlo Security investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Talent graph
Menlo Security's talent
Source: Dealroom Talent Intelligence.
Investors
15 investors on Menlo Security's cap table
Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.



Global footprint
Where Menlo Security has talent and traffic
team presence
In the news
Latest news about Menlo Security
Recent press, funding announcements, and product moves mentioning Menlo Security — open to read from the original sources.
Market sentiment
What the market is saying about Menlo Security
An AI-synthesized read of the highest-engagement posts about Menlo Security on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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