A report by a group of cybersecurity researchers found that cryptojacking instances jumped more than 400 percent in a year.
A website that serves as a central hub for a newly created cryptocurrency project went down today shortly after a successful, scheduled launch.
The EU’s top law enforcement agency has announced a new crackdown on the DDoS attack group DD4BC, which demands ransom in bitcoin.
Bitcoin exchange BTC-e was offline for several hours today after the site said that it was the target of a distributed denial-of service attack.
A number of privacy-oriented email service providers have been targeted by DDoS extortionists demanding payment in bitcoin.
An e-tailer is offering a $23,181 bounty to catch those who launched a DDoS attack against the firm's site before demanding a bitcoin ransom.
New Jersey-based online casinos were hit with distributed denial-of-service attacks and faced additional threats unless they paid a bitcoin ransom.
Two Hong Kong banks were targeted with distributed denial of service (DDoS) attacks earlier this week by unknown parties demanding bitcoin ransoms.
Distributed denial-of-service attacks against organizations in New Zealand appear to be connected to the extortionist group DD4BC.
A number of bitcoin mining pools around the world have been hit by a recent string of DDOS attacks.