Bolster: Multi-Channel Phishing Protection Company Raises $14 Million

Bolster

Bolster, a leader in multi-channel phishing protection, announced a $14 million Series B financing round led by M12, Microsoft’s venture fund, with participation from existing investors Thomvest Ventures, Crosslink Capital, Liberty Global Ventures, Cheyenne Ventures, Cervin Ventures, and Transform Capital. This round brings Bolster’s total funding to over $40 million.

Most cyberattacks begin with phishing, and many of these attacks target social media platforms. Using AI, attackers deploy sophisticated phishing and impersonation tactics across all digital business channels. To combat these growing digital threats, businesses need to leverage leading AI security vendors like Bolster. The company supports over 120 customers, including some of the most renowned brands, by detecting and eradicating phishing and impersonation attacks across malicious websites, mobile applications, social media platforms, and messaging tools.

Since 2017, Bolster has utilized AI and machine learning to train models on over 100TB of structured data, including URLs, domains, natural language text, and emails. In 2018, Bolster launched CheckPhish, one of the most popular phish and scam detection sites on the internet, with over 20% of the Fortune 500 registered as users. The vast amounts of data from CheckPhish are used to enhance Bolster’s AI and machine learning models.