The largest crypto theft to date was pulled off by combining some well-known hacking techniques over the course of a few months, according to Binance. A postmortem from the company says the process that started with one developer downloading a tampered installer in June apparently spread by a malicious Google ad, exposing details about the engineers and how they work. Then, in September, another engineer was targeted by someone pretending to be interested in hiring them, who set up a series of calls and multiple rounds of interviews, sharing social media pages to build trust, and eventually prompting them to download a fake interview assignm …