Optus data breach "attacker" says sorry, it was a mistake

Since Australian telecoms company Optus disclosed a security breach on September 22, 2022, a lot has been happening. Much of it reads like a movie script. Prologue A hacker acting under the pseudonym "optusdata" claims to have stolen the data of 10 million Optus customers. The information include...

Hacker Behind Optus Breach Releases 10,200 Customer Records in Extortion Scheme

The Australian Federal Police AFP on Monday disclosed it's working to gather "crucial evidence" and that it's collaborating with overseas law enforcement authorities following the hack of telecom provider Optus. "Operation Hurricane has been launched to identify the criminals behind the alleged...

Preventing Cryptocurrency Cyber Extortion

Highly destructive cybercrime is on the rise, and most of it is being funded with anonymous cryptocurrency. Discover cryptocurrency trends and how enterprises can enhance their cybersecurity posture to prevent cyber extortion...

Emotet Botnet Started Distributing Quantum and BlackCat Ransomware

The Emotet malware is now being leveraged by ransomware-as-a-service RaaS groups, including Quantum and BlackCat, after Conti's official retirement from the threat landscape this year. Emotet started off as a banking trojan in 2014, but updates added to it over time have transformed the malware...

Lorenz Ransomware Exploit Mitel VoIP Systems to Breach Business Networks

The operators behind the Lornenz ransomware operation have been observed exploiting a now-patched critical security flaw in Mitel MiVoice Connect to obtain a foothold into target environments for follow-on malicious activities. "Initial malicious activity originated from a Mitel appliance sitting...

Iranian Islamic Revolutionary Guard Corps-Affiliated Cyber Actors Exploiting Vulnerabilities for Data Extortion and Disk Encryption for Ransom Operations

Summary Actions to take today to protect against ransom operations: • Keep systems and software updated and prioritize remediating known exploited vulnerabilities. • Enforce MFA. • Make offline backups of your data. This joint Cybersecurity Advisory CSA is the result of an analytic effort among t...

Iranian Islamic Revolutionary Guard Corps Affiliated Cyber Actors Exploiting Vulnerabilities for Data Extortion and Disk Encryption for Ransom Operations

CISA, Federal Bureau of Investigation FBI, National Security Agency NSA, U.S. Cyber Command USCC - Cyber National Mission Force CNMF, Department of the Treasury, Australian Cyber Security Centre ACSC, Canadian Centre for Cyber Security CCCS, and United Kingdom’s National Cyber Security Centre NCS...

#StopRansomware: Vice Society

Note: This joint Cybersecurity Advisory CSA is part of an ongoing StopRansomware effort to publish advisories for network defenders that detail various ransomware variants and ransomware threat actors. These StopRansomware advisories include recently and historically observed tactics, techniques,...

Ransomware review: August 2022

Malwarebytes Threat Intelligence builds a monthly picture of ransomware activity by monitoring the information published by ransomware gangs on their Dark Web leak sites. This information represents victims who were successfully attacked but opted not to pay a ransom. As expected, LockBit remaine...

Vice Society actors target K-12 institutions in US

Threat Level Actor Report For a detailed threat advisory, download the pdf file here Summary Vice Society is an extortion hacking group that emerged in the summer of 2021. The Vice Society does not use a specific ransomware variant. Instead, they used variants of Hello Kitty, Five Hands, and...

The LockBit Ransomware Gang Is Surprisingly Professional

This article makes LockBit sound like a legitimate organization: The DDoS attack last weekend that put a temporary stop to leaking Entrust data was seen as an opportunity to explore the triple extortion tactic to apply more pressure on victims to pay a ransom. LockBitSupp said that the ransomware...

Chile government’s Windows and Linux servers hit by RedAlert ransomware

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary The Chilean Ministry of Interior asserted that RedAlert ransomware aka N13V attack had disrupted the operations and online services of a government agency in the country. In classic double-extortion...

Samsung Admits Data Breach that Exposed Details of Some U.S. Customers

South Korean chaebol Samsung on Friday said it experienced a cybersecurity incident that resulted in the unauthorized access of some customer information, the second time this year it has reported such a breach. "In late July 2022, an unauthorized third-party acquired information from some of...

Architecting for Extortion: Acting on the IST’s Blueprint for Ransomware Defense

Last month, the Institute for Security and Technology’s IST Ransomware Task Force RTF launched the Blueprint for Ransomware Defense, a mitigation, response, and recovery plan for small- and medium-sized enterprises. This action plan is a cross-industry document that targets business leaders and...

Moisha Ransomware spotted launching highly targeted attacks

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary Moisha ransomware based on .Net was first mentioned in mid-August, along with the PTMOISHA team, the threat actor behind it. This ransomware was developed to carry out very targeted attacks, as indicated...

Cyber Signals: 3 strategies for protection against ransomware

The “as a service” business model has gained widespread popularity as growing cloud adoption has made it possible for people to access important services through third-party providers. Given the convenience and agility of service offerings, perhaps it shouldn’t be surprising that the “as a servic...

Cyber Signals: 3 strategies for protection against ransomware

The “as a service” business model has gained widespread popularity as growing cloud adoption has made it possible for people to access important services through third-party providers. Given the convenience and agility of service offerings, perhaps it shouldn’t be surprising that the “as a servic...

CISA and FBI issue alert about Zeppelin ransomware

The Federal Bureau of Investigation FBI and the Cybersecurity and Infrastructure Security Agency CISA have released a joint Cybersecurity Advisory CSA about Zeppelin ransomware. The advisory contains indicators of compromise IOCs and tactics, techniques, and procedures TTPs associated with...

Feds: Zeppelin Ransomware Resurfaces with New Compromise, Encryption Tactics

Zeppelin ransomware is back and employing new compromise and encryption tactics in its recent campaigns against various vertical industries—particularly healthcare—as well as critical infrastructure organizations, the feds are warning. Threat actors deploying the ransomware as a service RaaS are...

Hackers Behind Cuba Ransomware Attacks Using New RAT Malware

Threat actors associated with the Cuba ransomware have been linked to previously undocumented tactics, techniques and procedures TTPs, including a new remote access trojan called ROMCOM RAT on compromised systems. The new findings come from Palo Alto Networks' Unit 42 threat intelligence team,...