Cloudsek
Founded 2015 Β· 246 employees on LinkedIn Β· 13 known investors
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CloudSEK builds an AI-based external threat management platform that detects, analyzes, and reports cyber threats across the surface web, deep web, dark web, and internet-exposed infrastructure for organizations. Its products include XVigil and Nexus, an AI-powered cybersecurity command center that unifies threat intelligence and attack surface insights.
Also known as CloudSEK Β· Cloudsek Information Security Private Limited
Founders & leadership
Cloudsek was founded in 2015 by Rahul Sasi, Rahul Sasi (Shashi), and Syed Shahrukh Ahmad.
Investors Β· 13
Also in the syndicate Β· 6
Funding
SEC filings, press & company announcements- Undisclosed amountSeries B2Jan 2026Source β
Source: company announcements and press reports β follow each round's link for the claim.
Company profile
researched Aug 2026CloudSEK is a cybersecurity company that applies contextual AI to predict and mitigate external cyber threats. Its SaaS platform monitors the surface web, deep web, dark web and internet-exposed infrastructure to detect what the company calls Initial Attack Vectors β early indicators such as leaked credentials, exposed APIs and compromised vendors β rather than post-incident indicators of compromise. The company positions this predictive approach in contrast to conventional, forensic threat intelligence.
The core product began as XVigil, an internet monitoring tool that scans thousands of sources on customers' behalf for cyber threats, data leaks and identity theft. XVigil evolved from a partly manual, partly machine-learning system into a fully automated platform and was rebranded as Nexus in 2025, presented as an AI-powered command center for cyber risk quantification. Adjacent products include SVigil, launched in 2023 for digital supply chain risk, which maps a customer's digital vendors and dependencies, and a free AI-powered DeepFake Analyzer released in 2024 to address deepfake scams and misinformation. CloudSEK has also published research on external exposure, including an announcement identifying more than 2,500 organisations potentially affected by an AI supply chain exposure across 434,000 software pipelines.
Founding story
CloudSEK was founded in September 2015 in Bangalore by cybersecurity researcher-turned-entrepreneur Rahul Sasi, together with co-founders Mohan Lal Menon and Syed Shahrukh Ahmad. The founders identified a gap in tools able to monitor threats across the surface web, deep web, dark web and internet-exposed infrastructure, and set out to combine machine learning, artificial intelligence and automation to detect and act on those threats proactively. Seed funding from the Meeran Foundation was secured in September 2015, coinciding with incorporation.
Business model
CloudSEK sells a cloud SaaS platform to enterprise customers on a recurring subscription basis, reporting annual recurring revenue as its principal performance measure. It also distributes free tools such as the DeepFake Analyzer.
Subscription-based SaaS revenue measured in annual recurring revenue, which reached roughly $10 million in FY25 after tripling over 24 months. The India entity, Cloudsek Information Security Private Limited, reported revenue of $8.86 million for the year ended 31 March 2024. Management stated the business was cash flow positive as of May 2025.
Traction
More than 250 enterprise customers, ARR tripling over the 24 months to May 2025 to about $10 million in FY25, over 60% of net new revenue from international markets with the U.S. the fastest-growing region, and 163 employees as of April 2025.
Latest developments
In May 2025 CloudSEK announced $19 million raised across Series A2 and B1 rounds with participation from MassMutual Ventures, Inflexor Ventures, Prana Ventures, Tenacity Ventures and Commvault, and signalled a planned Series B2 extension to onboard new investors and enable partial exits for early backers. The same year it rebranded XVigil to Nexus. The company also announced a strategic investment from a U.S. state fund and published research identifying more than 2,500 organisations potentially affected by an AI supply chain exposure across 434,000 software pipelines.
βΈFull profile β market position, technology, go-to-market, geography, history
Market position
CloudSEK describes itself as a leader in AI-powered cyber threat prediction and intelligence, citing a 4.8-star Gartner Peer Insights rating across 195 reviews. It is positioned against established threat detection and intelligence vendors including CrowdStrike, FireEye, Rapid7, Recorded Future, SentinelOne and Cynet, and was reported at a $120 million valuation as of May 2025.
The platform focuses on predicting Initial Attack Vectors β leaked credentials, exposed APIs and compromised vendors β that can surface weeks before an incident, rather than analysing indicators of compromise after an attack. Its contextual AI models aim to mimic human cognitive assessment of digital threats at greater speed and scale, processing roughly 37 GB of data daily.
Technology
Contextual AI and machine learning models combined with automation continuously crawl and analyse thousands of sources across the surface, deep and dark web and internet-exposed infrastructure. The Nexus platform (formerly XVigil) quantifies cyber risk and unifies threat intelligence, while SVigil applies contextual AI to map software supply chain vendors and dependencies.
Go-to-market
Enterprise SaaS sales supported by threat research publications and press announcements, with demand generation reinforced by public review platforms such as Gartner Peer Insights. Strategic corporate investors, including Commvault, are part of the investor base.
Enterprises across banking, healthcare, technology and the public sector; the company reported serving more than 250 enterprise customers as of May 2025.
Geography
Headquartered in Bangalore, India, with a Singapore headquarters/office listed as well; international markets, particularly the United States, account for the majority of net new revenue, and the company has stated plans to expand across India and South East Asia.
History
The XVigil prototype launched in February 2016 and revenue generation began by June 2016 with more than eight customers onboarded; the first official version of XVigil followed in 2017, alongside pre-Series A funding led by Exfinity Venture Partners and StartupXseed. In November 2018 the company raised $2 million in pre-Series A funding from Exfinity Venture Partners and StartupXseed, with a further $0.5 million from IDFC Parampara in February 2019, and Sourabh Issar became CEO in November 2018. CloudSEK joined the NetApp Excellerator 5th Cohort in March 2019 and graduated from the programme in January 2020 with a 'Best Growth Strategy' award, also receiving a DSCI Excellence Award in 2020. Founders were named to the Reserve Bank of India's digital lending working group in 2021. Product expansion continued with SVigil in 2023 and the DeepFake Analyzer in 2024, and in 2025 XVigil was rebranded to Nexus and the company announced $19 million raised across Series A2 and B1 rounds.
Compiled by commissioned research from 4 cited public sources β announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed β not independently audited.
Competitors Β· 7
by search overlap
Companies competing with Cloudsek for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline Β· 14
launches, deals, and filingsRaise included MassMutual Ventures, Inflexor Ventures, Prana Ventures, Tenacity Ventures and strategic investor Commvault, with earlier backers including the Meeran Family (founders of Eastern Group), StartupXSeed, Neon Fund and Exfinity Ventures. Proceeds earmarked for product innovation, AI model development, platform integrations and global expansion. The company said a Series B2 extension would be announced to onboard new investors and enable partial exits for early backers.
$19M source β
Uses contextual AI to identify and monitor software supply chain risks by mapping digital vendors and dependencies.
$500K source β
$2M source β
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
βΈResearch sources Β· 4
primary sources listed
- CloudSEK Raises $19 Million in Series B1 Funding to Scale Predictive Cybersecurity Platformprnewswire.com Β· web
4 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Cloudsek do?
- CloudSEK is an AI-powered predictive cyber threat intelligence company serving enterprises from Bangalore and Singapore.
- Who founded Cloudsek?
- Cloudsek was founded by Rahul Sasi, Rahul Sasi (Shashi), Syed Shahrukh Ahmad in 2015.
- Who are Cloudsek's investors?
- Cloudsek's investors include Connecticut Innovations, Exfinity Ventures, Tenacity Ventures, Inflexor Ventures, MassMutual Ventures, Crane Venture Partners, Pavestone.