CVE-2017-9230

The Bitcoin Proof-of-Work algorithm does not consider a certain attack methodology related to 80-byte block headers with a variety of initial 64-byte chunks followed by the same 16-byte chunk, multiple candidate root values ending with the same 4 bytes, and calculations involving sqrt numbers. Th...

CVE-2017-9230

CVE-2017-9230 is tied to a Bitcoin Proof-of-Work methodology issue: 80-byte block headers with varying 64-byte chunks and identical 16-byte tail, multiple candidate roots ending with the same 4 bytes, and sqrt-number calculations that can affect difficulty and independence of PoW executions. Conn...

CVE-2017-9230

The Bitcoin Proof-of-Work algorithm does not consider a certain attack methodology related to 80-byte block headers with a variety of initial 64-byte chunks followed by the same 16-byte chunk, multiple candidate root values ending with the same 4 bytes, and calculations involving sqrt numbers. Th...

CVE-2017-9230

The Bitcoin Proof-of-Work algorithm does not consider a certain attack methodology related to 80-byte block headers with a variety of initial 64-byte chunks followed by the same 16-byte chunk, multiple candidate root values ending with the same 4 bytes, and calculations involving sqrt numbers. Th...

PT-2017-18795 · Bitcoin · Bitcoind

Name of the Vulnerable Software and Affected Versions: Bitcoin affected versions not specified Description: The Bitcoin Proof-of-Work algorithm has an issue related to 80-byte block headers with varying initial 64-byte chunks followed by the same 16-byte chunk, and multiple candidate root values...

CVE-2017-9230: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

The Bitcoin Proof-of-Work algorithm does not consider a certain attack methodology related to 80-byte block headers with a variety of initial 64-byte chunks followed by the same 16-byte chunk, multiple candidate root values ending with the same 4 bytes, and calculations involving sqrt numbers. Th...

WannaCry Malware Profile

WannaCry also known as WCry or WanaCryptor malware is a self-propagating worm-like ransomware that spreads through internal networks and over the public internet by exploiting a vulnerability in Microsoft’s Server Message Block SMB protocol, MS17-010. The WannaCry malware consists of two distinct...

WannaCry Malware Profile

WannaCry also known as WCry or WanaCryptor malware is a self-propagating worm-like ransomware that spreads through internal networks and over the public internet by exploiting a vulnerability in Microsoft’s Server Message Block SMB protocol, MS17-010. The WannaCry malware consists of two distinct...

The Future of Ransomware

Ransomware isn't new, but it's increasingly popular and profitable. The concept is simple: Your computer gets infected with a virus that encrypts your files until you pay a ransom. It's extortion taken to its networked extreme. The criminals provide step-by-step instructions on how to pay,...

WannaCry Ransomware

Criminals go where the money is, and cybercriminals are no exception. And right now, the money is in ransomware. It's a simple scam. Encrypt the victim's hard drive, then extract a fee to decrypt it. The scammers can't charge too much, because they want the victim to pay rather than give up on th...

What’s Next for Ransomware: Data Corruption, Exfiltration and Disruption

Ransomware’s popularity continues to skyrocket, due to its successful business model and the significant profit paid by its victims. Unlike other malware business models – where attackers steal data and then sell it on the darknet; hackers who utilize ransomware as their attack vector receive...

WannaCry: What We Know

On Friday, May 12, news agencies around the world reported that a new ransomware threat was spreading rapidly. Akamai's incident response teams and researchers worked quickly to understand this new threat and how to mitigate it. This blog post is a summary of what Akamai knows at this point...

WannaCry Ransomware: Everything You Need To Know Immediately

By now I am sure you have already heard something about the WannaCry ransomware, and are wondering what's going on, who is doing this, and whether your computer is secure from this insanely fast-spreading threat that has already hacked nearly 200,000 Windows PCs over the weekend. The only positiv...

Global ‘Wana’ Ransomware Outbreak Earned Perpetrators $26,000 So Far

As thousands of organizations work to contain and clean up the mess from this week's devastating Wana ransomware attack, the fraudsters responsible for releasing the digital contagion are no doubt counting their earnings and congratulating themselves on a job well done. But according to a review ...

Protect Against WannaCry: Microsoft Issues Patch for Unsupported Windows (XP, Vista, 8,...)

Update — After reading this article, if you want to know, what has happened so far in past 4 days and how to protect your computers from WannaCry, read our latest article "WannaCry Ransomware: Everything You Need To Know Immediately." In the wake of the largest ransomware attack in the history th...

New Jaff Ransomware Part Of Active Necurs Spam Blitz

A new malware family called Jaff has been identified by researchers who say they are currently tracking multiple massive spam campaigns distributing the malware via the Necurs botnet. “It came out of nowhere with a huge bang,” Cisco Talos researchers said Friday In the last 24 hours, the firm has...

HandBrake for Mac Compromised with Proton Spyware

The handlers of the open source HandBrake video transcoder are warning anyone who recently downloaded the Mac version of the software that they’re likely infected with malware. HandBrake warned users on Saturday of a compromise of one of its mirror download servers, and said anyone who grabbed th...

Ultrasonic Beacons Are Tracking Your Every Movement

More than 200 Android mobile applications listen surreptitiously for ultrasonic beacons embedded in audio that are used to track users and serve them with targeted advertising. Academics from Technische Universitat Braunschweig in Germany recently published a paper in which they describe their...

Low Risk Threat: DDoS Extortion Letters

Summary Adversaries calling themselves the Lizard Squad have been sending businesses extortion letters, demanding payment in bitcoin to prevent a Distributed Denial of Service DDoS or other attack against their applications. These letters have been sent to businesses across the globe and across...

Locky Ransomware Roars Back to Life Via Necurs Botnet

Cybercriminals behind the Locky ransomware and Necurs botnet are back in business. Last Friday researchers spotted both delivering nearly 35,000 emails in just a few hours, the first major Locky campaign researchers have seen in months, according to Cisco Talos. Researchers warn the latest Locky...