BitDam published a study on the email threat detection weaknesses of the leading players in email security. Microsoft’s Office365 ATP and Google’s G Suite are allegedly critically weak when dealing with unknown threats. Their time-to-detect (TTD) can take up to two days since their first encounter with unknown attacks, BitDam’s study found. Office365 has an average first encounter miss rate of 23% while G Suite has 35.5%. They also have notably long TTDs after the first encounter.
Source: https://thehackernews.com/2020/01/email-security-software.html