A report from Sophos suggests that the attack techniques are varied and often multi-staged which makes it that much harder for security experts to keep their networks intact. Some 20 per cent of the respondents (out of 3,100 surveyed) said they didn’t know how they got breached.
https://www.itproportal.com/news/it-managers-are-struggling-to-keep-up-with-cyberattacks/
