The biggest threats to cyber security in 2017 were:  (i) Shadow Brokers, a hacking group hacked NSA-linked operations which are a huge threat to all software users. (ii) Wannacry, a ransom wire which crippled public utilities and large corporations. (iii) Petya/NotPetya/Nyetia/Goldeneye which affected the infrastructure of Ukraine. (iv) Wikileaks CIA Vault 7 stole various CIA securities in March. (v) Cloudbleed, a bug in the Cloud fare platform managed to hack numerous sensitive customer data. (vi) 198 Million Voters Record Exposed in June in the US. (vii) Macron Campaign Hack, a campaign that hacked a 9 GB basket of emails of the Presidential candidate, Emmanuel Macron in France. Read more at: https://www.wired.com/story/2017-biggest-hacks-so-far/