DDoS

Extortion

New Zealand Stock Exchange Hit Repeatedly by Cybercriminals Demanding Bitcoin

Sebastian SinclairAug 27, 2020

NZX has halted trading for the third day in a row as a result of cybercriminals attempting to extort cryptocurrency.

Cyberattacks

Major Crypto Exchanges Bitfinex and OKEx Hit by Service Denial Attacks

Daniel PalmerFeb 28, 2020

Both cryptocurrency exchanges have reported distributed denial-of-service (DDoS) attacks on their systems in the last 24 hours.

Bitcoin.org

Bitcoin.org Briefly Shut Down by Denial of Service Attack; Bitcoin Not Affected

Colin HarperDec 19, 2020

While the site was inaccessible, bitcoiners shared the software to newcomers wanting to download Bitcoin's code.

Security

Report Finds Cryptojacking Instances Jumped 400% In A Year

Aditi HudliSep 21, 2018

A report by a group of cybersecurity researchers found that cryptojacking instances jumped more than 400 percent in a year.

DDoS

Bitcoin Gold Website Down Following DDoS Attack

Rachel-Rose O'LearyOct 24, 2017

A website that serves as a central hub for a newly created cryptocurrency project went down today shortly after a successful, scheduled launch.

DDoS

Crime

Suspected Members of Bitcoin Extortion Group DD4BC Captured

Stan Higgins

The EU’s top law enforcement agency has announced a new crackdown on the DDoS attack group DD4BC, which demands ransom in bitcoin.

Exchanges

Bitcoin Exchange BTC-e Back Online After Reported DDoS

Stan Higgins

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.

Crime

DDoS Extortionists Demand Bitcoin from Email Providers

Stan Higgins

A number of privacy-oriented email service providers have been targeted by DDoS extortionists demanding payment in bitcoin.

Crime

E-Tailer Offers $23,000 to Catch DDoS Attackers Demanding Bitcoin

Yessi Bello Perez

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.

Crime

New Jersey Casinos Face Bitcoin Ransom Threats

Stan Higgins

New Jersey-based online casinos were hit with distributed denial-of-service attacks and faced additional threats unless they paid a bitcoin ransom.

Crime

Hong Kong Banks Hit By Bitcoin Ransom Demands

Stan Higgins

Two Hong Kong banks were targeted with distributed denial of service (DDoS) attacks earlier this week by unknown parties demanding bitcoin ransoms.

Crime

Bitcoin Extortion Group DD4BC Prompts Warning from Swiss Government

Stan Higgins

Distributed denial-of-service attacks against organizations in New Zealand appear to be connected to the extortionist group DD4BC.