Another busy week in cybersecurity. In case you missed it: A widely used messaging app used by over a million protesters has several major security flaws; a little-known loophole has let the DMV sell driver’s licenses and Social Security records to private investigators; and the U.S. government is suing to reclaim over $2.5 million in cryptocurrency stolen by North Korean hackers from two major exchanges. But this week we are focusing on how a Tesla employee foiled a ransomware attack, and, ahead of Palantir’s debut on the stock market, how…