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PhaaS(1) (PHishing As AService) Software, templates, sample Web pages and tutorials that allow anyone to set up a phishing scam. Such material is found on the dark Web. See phishing, XaaS and dark Web.
(2) (PHishing As AService) A service offered by Deloitte that tests how vulnerable a company is to phishing schemes. Deloitte sends a variety of carefully crafted phishing emails to the employees of its client and evaluates the responses. See phishing and XaaS.