The City of Johannesburg says they will not concede to the demands of the Hackers, known as Shadow Kill. The City has roped in international partners to deal with the cyber-attack. Shadow Kill Hackers gave the city until 5pm yesterday to pay 4.0 bitcoins, currently estimated at around R500,000. Failing to do so the hackers threatened to leak compromised city data on the internet. The City of Joburg said that it has managed to find out where and how its information system was hacked.