Security Affairs

OCTOBER 5, 2021

An unnamed ransomware gang used a custom Python script to target VMware ESXi and encrypt all the virtual machines hosted on the server. Researchers from Sophos were investigating a ransomware attack when discovered that the attackers employed a Python script to encrypt virtual machines hosted on VMware ESXi servers.

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Thales Cloud Protection & Licensing

FEBRUARY 12, 2025

The Rise of Non-Ransomware Attacks on AWS S3 Data madhav Thu, 02/13/2025 - 04:39 A sophisticated ransomware gang, Codefinger, has a cunning new technique for encrypting data stored in AWS S3 buckets without traditional ransomware tools. Unlike conventional ransomware, the malicious actors dont exfiltrate any data.

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Ransomware Encryption Digital transformation Risk 77

eSecurity Planet

MARCH 17, 2025

The Cybersecurity and Infrastructure Security Agency (CISA), in collaboration with the Federal Bureau of Investigation (FBI) and the Multi-State Information Sharing and Analysis Center (MS-ISAC), has released a joint cybersecurity advisory warning organizations about the escalating threat posed by the Medusa ransomware.

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Security Affairs

JULY 6, 2022

Hive ransomware operators have improved their file-encrypting module by migrating to Rust language and adopting a more sophisticated encryption method. ” These upgrades prove that Hive is one of the fastest evolving ransomware families in the cybercrime ecosystem. . ” reads the post published by Microsoft.

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SecureWorld News

NOVEMBER 7, 2024

In the same way, utilities around the world have experienced service disruptions as ransomware targets back-end systems. Strong authentication: Each device, no matter how small, should have strong, unique authentication measures to prevent unauthorized access. End-to-end encryption: Encrypt all data from sensors to controller.

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Security Affairs

MARCH 13, 2025

The Medusa ransomware operation hit over 300 organizations in critical infrastructure sectors in the United States until February 2025. The FBI, CISA, and MS-ISAC have issued a joint advisory detailing Medusa ransomware tactics, techniques, and indicators of compromise (IOCs) based on FBI investigations as recent as February 2025.

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Hacker Combat

MAY 10, 2022

To breach a company, ransomware attackers utilize a variety of methods. A researcher has demonstrated how a vulnerability common to several ransomware families can help take control of the malware and stop it from encrypting files on infected devices. Suppose the new DLL is placed next to the ransomware executable.

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Digital Shadows

FEBRUARY 17, 2025

Key Findings First observed in March 2024, BlackLock (aka El Dorado or Eldorado) has rapidly emerged as a major player in the ransomware-as-a-service (RaaS) ecosystem. By Q4 2024, it ranked as the 7th most prolific ransomware group on data-leak sites, fueled by a staggering 1,425% increase in activity from Q3.

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The Last Watchdog

MAY 5, 2022

Ransomware? Well, the stats are even scarier with over 50% increase in ransomware attacks in 2021, compared to 2020. The media paid close attention to ransomware attacks last year, as they had a significant impact on Colonial Pipeline, the nation’s largest fuel distributor, and JBS, the nation’s largest meat distributor.

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Ransomware Risk Internet Internet 247

eSecurity Planet

FEBRUARY 24, 2025

Over 200,000 internal messages from the notorious ransomware group Black Basta have surfaced online exposing deep divisions, ransom negotiations, and internal dysfunction. Cybersecurity experts are now poring over the data, uncovering a rare inside look at how one of the most feared ransomware groups operates and potentially unravels.

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Digital Shadows

MARCH 17, 2025

VPN Infrastructures Allure for Threat Actors PNs have become a fundamental part of network security for organizations worldwide, enabling secure remote access to systems, encrypting sensitive data during transmission, and protecting internal networks from unauthorized access.

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SecureWorld News

JANUARY 16, 2025

A report from 2023 revealed that 67% of energy and utility companies faced ransomware attacks, with many incidents exploiting unpatched vulnerabilities. Multi-factor authentication (MFA): MFA ensures that access to critical systems is granted only after verifying user credentials through multiple channels.

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Energy and Utilities IoT Artificial Intelligence Backups 109

eSecurity Planet

OCTOBER 15, 2024

While American Water has not disclosed the exact method of attack, such incidents often involve tactics like ransomware or phishing , where hackers gain access to sensitive systems and either steal or encrypt data, demanding a ransom in return for restoring access.

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Security Affairs

APRIL 7, 2025

In Dark Web environments as well as on specialized forums, sellers are posting synthetic ads inviting potential buyers to contact them privately, often via Telegram, Session, and other encrypted messaging apps. Payments are mostly made in Bitcoin or Monero, to ensure confidentiality and irreversibility.

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The Hacker News

JULY 29, 2024

A recently patched security flaw impacting VMware ESXi hypervisors has been actively exploited by "several" ransomware groups to gain elevated permissions and deploy file-encrypting malware.

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eSecurity Planet

AUGUST 19, 2022

One new tactic hackers have been using is to steal cookies from current or recent web sessions to bypass multi-factor authentication (MFA). Even cloud infrastructures rely on cookies to authenticate their users. Browsers allow users to maintain authentication, remember passwords and autofill forms. How Hackers Steal Cookies.

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Krebs on Security

DECEMBER 8, 2022

Ransomware groups are constantly devising new methods for infecting victims and convincing them to pay up, but a couple of strategies tested recently seem especially devious. Department of Health and Human Services (HHS) warned that Venus ransomware attacks were targeting a number of U.S. Encrypting sensitive data wherever possible.

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Thales Cloud Protection & Licensing

MAY 17, 2023

Ransomware – Stop’em Before They Wreak Havoc madhav Thu, 05/18/2023 - 06:03 Cybercriminals have been making a run on your data with ransomware attacks over the last decade in increasing frequency. What is Ransomware? Ransomware is a vicious type of malware that infects your laptop/desktop or server.

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eSecurity Planet

AUGUST 4, 2022

It’s been a couple of decades since data tapes delivered by trucks made encryption a standard enterprise cybersecurity practice. Yet even as technology has changed, sending and receiving data remains a major vulnerability, ensuring encryption’s place as a foundational security practice. What is Encryption?

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eSecurity Planet

MAY 25, 2022

Encryption and the development of cryptography have been a cornerstone of IT security for decades and remain critical for data protection against evolving threats. While cryptology is thousands of years old, modern cryptography took off in the 1970s with the help of the Diffie-Hellman-Merkle and RSA encryption algorithms.

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Encryption Computers and Electronics Password Management Passwords 138

Security Affairs

JULY 23, 2021

The software provider Kaseya announced to have obtained a universal decryptor for the REvil ransomware. Earlier this month, a massive supply chain attack conducted by the REvil ransomware gang hit the cloud-based managed service provider platform Kaseya, impacting both other MSPs using its VSA software and their customers.

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eSecurity Planet

DECEMBER 4, 2024

This approach also helps to contain the spread of malware and ransomware, which, according to Microsoft’s Digital Defense Report, resulted in 93% of these attacks being successful due to them having access to so many privileged user accounts. Data Protection Windows 11 Enterprise introduced a new Personal Data Encryption feature.

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CyberSecurity Insiders

OCTOBER 13, 2021

Every year, ransomware evolves to become a greater threat to the security of organizations. In 2020, ransomware attacks grew by 150%, and are growing even faster in 2021 , and with costs to repair the damage they cause in the millions of dollars, many organizations are desperate for solutions. Effects of Ransomware.

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Malwarebytes

JUNE 1, 2022

We can now add “a ransomware attack” to this once static list. When a ransomware attack takes out an organization, they often revert to pen and paper to keep things ticking over. When ransomware locks down a chunk of historical data, things apparently become much more convoluted. Tips to avoid ransomware.

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CyberSecurity Insiders

AUGUST 11, 2021

Accenture that offers professional services was reportedly hit by a ransomware attack launched by LockBit group. Note 1- Eamon Javers, the reporter working from CNBC, was the first to disclose the news to the world on Accenture ransomware attack and confirmed that Accenture cyber resilience finally yielded excellent results.

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Security Affairs

APRIL 21, 2024

Government agencies revealed that Akira ransomware has breached over 250 entities worldwide and received over $42 million in ransom payments. Like other ransomware gangs, the group has developed a Linux encryptor to target VMware ESXi servers. “Akira threat actors utilize a sophisticated hybrid encryption scheme to lock data.

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Security Affairs

OCTOBER 19, 2021

FBI, CISA, NSA have published a joint advisory about the operation of the BlackMatter ransomware gang and provides defense recommendations. Like other ransomware operations, BlackMatter also set up its leak site where it publishes data exfiltrated from the victims before encrypting their system.

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Security Affairs

AUGUST 28, 2024

BlackByte ransomware operators are exploiting a recently patched VMware ESXi hypervisors vulnerability in recent attacks. Cisco Talos observed the BlackByte ransomware group exploiting the recently patched security flaw CVE-2024-37085 in VMware ESXi hypervisors in recent attacks. The flaw CVE-2024-37085 (CVSS score of 6.8)

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Security Affairs

FEBRUARY 12, 2024

Researchers discovered a vulnerability in the code of the Rhysida ransomware that allowed them to develop a decryption tool. Cybersecurity researchers from Kookmin University and the Korea Internet and Security Agency (KISA) discovered an implementation vulnerability in the source code of the Rhysida ransomware.

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The Last Watchdog

JULY 11, 2024

Related: Passwordless workpace long way off However, as users engage with more applications across multiple devices, the digital security landscape is shifting from passwords and password managers towards including passwordless authentication, such as multi-factor authentication (MFA), biometrics, and, as of late, passkeys.

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Authentication Passwords Malware Accountability 124

Centraleyes

DECEMBER 16, 2024

By focusing on identity and access management (IAM), multi-factor authentication (MFA), and micro-segmentation, ZTA provides a robust defense against modern threats. Ransomware Still Reigns Supreme Ransomware attacks continue to plague organizations globally, and 2024 will be no different.

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Cybersecurity Insurance Cyber Insurance Risk 98

Malwarebytes

JULY 23, 2021

The threat actor used this entry point to get into a Domain Controller and then leveraged it as a springboard to deploy ransomware. While examining the ransomware payload, we noticed it was a new variant which we had not heard of before. New ransomware, looking for partners. After that it goes to the encryption.

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Security Affairs

MAY 13, 2024

Experts reported that since April, the Phorpiex botnet sent millions of phishing emails to spread LockBit Black ransomware. The ZIP archives contain a compressed executable payload that, if executed, will start the encryption process with LockBit Black ransomware. ” states the report published by the NJCCIC. 177 and 185[.]215[.]113[.]66.

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IT Security Guru

SEPTEMBER 28, 2023

The landscape of ransomware has undergone rapid evolution, shifting from a relatively straightforward form of malicious software primarily affecting individual computer users, to a menacing enterprise-level threat that has inflicted substantial harm on various industries and government institutions.

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Security Affairs

AUGUST 23, 2024

Sophos researchers investigated a Qilin ransomware breach attack that led to the theft of credentials stored in Google Chrome browsers. Sophos researchers investigated a Qilin ransomware attack where operators stole credentials stored in Google Chrome browsers of a limited number of compromised endpoints. ” concludes the report.

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Cisco Security

JULY 14, 2021

Ransomware is wreaking havoc. Ransomware is making its way outside the cybersecurity space. Most people probably know what ransomware is (if not, go here ). Ransomware is now everyone’s problem – from governments to corporations and even individuals. Why is ransomware so dangerous, especially now? What can we do?

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SecureList

APRIL 15, 2024

They generated a custom version of the ransomware, which used the aforementioned account credential to spread across the network and perform malicious activities, such as killing Windows Defender and erasing Windows Event Logs in order to encrypt the data and cover its tracks. In this article, we revisit the LockBit 3.0

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