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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
client focusb2bsub industryDevice security & AntivirusindustrySecuritysectorRisk ManagementsectorNetwork SecuritysectorAppliancessectorSpinoutsectorCybersecurity

Valuation & funding

Menlo Security funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
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
Showing 8 recorded eventsUnlock the complete deal history →

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.

Latest monthly visits490K 3-month web change+19.5% 1-year team growth+4.8%
Monthly website visits113 observations · Jan 2017–Jul 2026
Hover or focus a point to see its exact monthly valueCompare with peers →

Comparisons

Menlo Security compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

CompanyHeadquartersStatusEmployeesTotal fundingValuation
CyberOwlOffers an early warning system for cyber attacks through real-time monitoring of high value targets for malicious behavior London, United Kingdom Acquired 65 $9M $20M
Huawei Symantec TechnologiesLeading provider of network security and storage appliance solutions Chengdu, China Acquired
EfficientIPSolutions to address organizations' needs to drive business efficiency through network services availability, security La Garenne-Colombes, France Acquired
ShieldIOTShieldIOT delivers innovative cybersecurity solutions that protect edge devices from security threats and operational risks Kfar Saba, Israel Operational
DB NetworksPredictive database security using machine learning analytics San Diego, United States Operational
SynackA human-powered security solution offering scalable continuous testing for enterprise applications and networks Redwood City, United States Operational
QualysThe Qualys Cloud Platform and integrated suite of solutions helps businesses simplify security operations and lower the cost of compliance by delivering critical security intelligence on demand and automating the full spectrum of auditing, compliance Redwood City, United States Operational
ImpervaProvides cyber security solutions that protect business-critical data and applications San Mateo, United States Acquired
Showing 8 of the closest matchesCompare every metric →

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

Book a demo to see the people
Team profiled 35 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 8 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

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.

Seed 2 investors entered at this stage
Osage University Partners
Engineering Capital
Series A 4 investors entered at this stage
Series B+ 8 investors entered at this stage
Amex Ventures
American Express Ventures
HSBC
Ericsson
Ericsson Ventures
J.P. Morgan Asset Management
Vista Equity Partners
Neuberger Berman
Other known 1 additional known investor
University of California, Berkeley

Global footprint

Where Menlo Security has talent and traffic

Workforce by country
17 countries with
team presence
🇺🇸 United States43%
🇮🇳 India18.6%
🇬🇧 United Kingdom14.9%
🇸🇬 Singapore7.6%
🇨🇦 Canada5.5%
Top 5 of 17 shown

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.

See all news

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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