An SEC warning about cybersecurity

Eight firms had a bunch of email accounts get hacked because of failures in their cybersecurity programs. According to the SEC, what did they do wrong?
A collection of 3 posts
Eight firms had a bunch of email accounts get hacked because of failures in their cybersecurity programs. According to the SEC, what did they do wrong?
EDIT 2020-08-03: It looks like the Bitcoin scam was conducted by three younger people (one is a minor) after a long period of reconnaissance and successful social engineering attacks against internal Twitter employees.
Last week we dealt with a phishing attack that turned out to be a bit scary. The attack used a technique that I knew was possible, but had only read about before (check