Browser Extension That Neutralizes Malicious Sites at Click Time

Apozy is a venture-backed security company founded in 2014 in San Francisco and a Y Combinator alumnus. It sells Airlock, a browser defense platform aimed at organizations whose employees are frequent phishing targets, including firms worried about brand impersonation and breach headlines. The pitch is directed at security teams that consider full remote browser isolation too heavy to roll out, since Airlock installs as a browser extension rather than as separate infrastructure.

Airlock uses what the company calls native browser isolation: instead of rendering pages on a remote server and streaming pixels back, it disarms a malicious site inside the browser at the moment of click. Computer vision models, trained on a visual dataset the company describes as exceeding six petabytes, classify pages by how they look, which catches brand impersonation that URL reputation lists miss. A central ad blocker cuts malvertising beyond domain-level filtering.

Deployment takes under a minute per browser and requires no proxy, TLS interception, or managed infrastructure, which is the main operational difference from a traditional secure web gateway. The visual threat database is exposed through an API so existing security tools can check whether a URL is malicious in real time, and the company runs a takedown service that hunts phishing sites impersonating client brands. It cites recognition of its phishing detection research from IEEE and Cornell University.