https://www.theguardian.com/uk-news/2019/apr/09/uk-hacker-jailed-six-years-blackmailing-pornography-website-users > Zain Qaiser targeted millions of computers with ransomware demanding large sums > A hacker who blackmailed users of pornography websites in what investigators say is the UK’s most serious cybercrime case has been jailed for six years and five months.