Schneier on Security

JULY 8, 2021

ArsTechnica has a good story on the REvil ransomware attack of last weekend, with technical details: This weekend’s attack was carried out with almost surgical precision. The ransomware dropper Agent.exe is signed with a Windows-trusted certificate that uses the registrant name “PB03 TRANSPORT LTD.”

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Ransomware Malware Firewall Encryption 363

Security Affairs

OCTOBER 13, 2024

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape. Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape. Over 300,000!

Malware 123

Malware DDOS Cryptocurrency Education 123

Joseph Steinberg

APRIL 6, 2021

While ransomware may seem like a straightforward concept, people who are otherwise highly-knowledgeable seem to cite erroneous information about ransomware on a regular basis. As such, I would like to point out 8 essential points about ransomware. Many ransomware attacks are now targeted, rather than opportunistic.

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Ransomware Computers and Electronics Backups Artificial Intelligence 352

Security Affairs

OCTOBER 20, 2024

Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape. Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape.

Malware 124

Malware Ransomware Encryption Phishing 124

Security Affairs

MARCH 10, 2025

Microsoft researchers reported that North Korea-linked APT tracked as Moonstone Sleet has employed the Qilin ransomware in limited attacks. Microsoft observed a North Korea-linked APT group, tracked as Moonstone Sleet, deploying Qilin ransomware in limited attacks since February 2025. ” Microsoft wrote on X. .

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Ransomware VPN Healthcare Malware 118

Webroot

OCTOBER 31, 2024

This year has seen ransomware groups adapt and innovate, pushing the boundaries of their malicious capabilities and evasiveness from law enforcement. In our annual “Nastiest Malware” report, now in its sixth year, we’ve observed a steady increase in both the number and sophistication of malware attacks.

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Malware Ransomware Passwords Healthcare 104

Krebs on Security

AUGUST 14, 2020

NASDAQ:RCM ], one of the nation’s largest medical debt collection companies, has been hit in a ransomware attack. R1 RCM acknowledged taking down its systems in response to a ransomware attack, but otherwise declined to comment for this story. R1 RCM Inc. Formerly known as Accretive Health Inc. billion in 2019.

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Ransomware Healthcare Insurance Phishing 363

Security Affairs

MARCH 24, 2025

The FBI warns of a significant increase in scams involving free online document converters to infect users with malware. The FBI warns that threat actors use malicious online document converters to steal users sensitive information and infect their systems with malware. ” reads the alert. ” continues the alert.

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Malware Scams Identity Theft Antivirus 87

Security Affairs

NOVEMBER 21, 2024

Mexico is investigating a ransomware attack targeting its legal affairs office, as confirmed by the president amidst growing cybersecurity concerns. Mexico’s president announced the government is investigating an alleged ransomware hack that targeted the administration’s legal affairs office. Knight, also known as Cyclops 2.0,

Government 144

Government Hacking Ransomware Insurance 144

Schneier on Security

MAY 21, 2021

In the first, hackers encrypt data with ransomware A and then re-encrypt that data with ransomware B. The other path involves what Emsisoft calls a “side-by-side encryption” attack, in which attacks encrypt some of an organization’s systems with ransomware A and others with ransomware B.

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Encryption Ransomware Malware 363

Security Affairs

NOVEMBER 19, 2024

Russian Phobos ransomware operator Evgenii Ptitsyn, accused of managing attacks, was extradited from South Korea to the US to face cybercrime charges. Russian Phobos ransomware operator Evgenii Ptitsyn, suspected of playing a key role in the ransomware operations, was extradited from South Korea to the US to face cybercrime charges.

Cybercrime 115

Cybercrime Ransomware Healthcare Education 115

Malwarebytes

DECEMBER 2, 2024

The US Department of Justice has charged a Russian national named Evgenii Ptitsyn with selling, operating, and distributing a ransomware variant known as “Phobos” during a four-year cybercriminal campaign that extorted at least $16 million from victims across the world.

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Ransomware Backups Small Business Malware 123

Krebs on Security

MAY 30, 2024

Law enforcement agencies in the United States and Europe today announced Operation Endgame, a coordinated action against some of the most popular cybercrime platforms for delivering ransomware and data-stealing malware. Dubbed "the largest ever operation against botnets," the international effort…

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Malware Cybercrime Ransomware 288

Security Affairs

NOVEMBER 8, 2024

Texas oilfield supplier Newpark Resources suffered a ransomware attack that disrupted its information systems and business applications. Texas oilfield supplier Newpark Resources revealed that a ransomware attack on October 29 disrupted access to some of its information systems and business applications.

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Security Affairs

NOVEMBER 13, 2024

Bitdefender released a decryptor for the ShrinkLocker ransomware, which modifies BitLocker configurations to encrypt a system’s drives. ShrinkLocker ransomware was first discovered in May 2024 by researchers from Kaspersky. “ShrinkLocker is a novel ransomware strain that leverages a unique approach to encrypt systems.

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Krebs on Security

JUNE 16, 2021

Authorities in Ukraine this week charged six people alleged to be part of the CLOP ransomware group , a cybercriminal gang said to have extorted more than half a billion dollars from victims. The CLOP gang seized on those flaws to deploy ransomware to a significant number of Accellion’s FTA customers , including U.S.

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Security Affairs

DECEMBER 4, 2024

BT Group (formerly British Telecom)’s Conferencing division shut down some of its servers following a Black Basta ransomware attack. British multinational telecommunications holding company BT Group (formerly British Telecom) announced it has shut down some of its servers following a Black Basta ransomware attack.

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Ransomware Telecommunications Healthcare Insurance 126

eSecurity Planet

OCTOBER 22, 2024

These malware scams lure individuals with fake conference invitations designed to mimic legitimate meeting requests and exploit users’ trust. You are then guided to execute PowerShell code designed to “fix” the supposed problem, unwittingly allowing malware to infiltrate their systems.

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Scams Malware Phishing Social Engineering 124

Krebs on Security

OCTOBER 1, 2020

Companies victimized by ransomware and firms that facilitate negotiations with ransomware extortionists could face steep fines from the U.S. While it may seem unlikely that companies victimized by ransomware might somehow be able to know whether their extortionists are currently being sanctioned by the U.S. Image: Shutterstock.

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Ransomware Cyber Insurance Insurance Cybercrime 363

Security Affairs

NOVEMBER 29, 2024

Russian authorities arrested ransomware affiliate Mikhail Matveev, aka Wazawaka, for developing malware and ties to hacking groups. In May 2023, the US Justice Department charged Russian national Mikhail Pavlovich Matveev for his alleged role in multiple ransomware attacks. ” reported RIA Novosti.

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Ransomware Healthcare Hacking Malware 118

Krebs on Security

NOVEMBER 10, 2020

It’s bad enough that many ransomware gangs now have blogs where they publish data stolen from companies that refuse to make an extortion payment. Now, one crime group has started using hacked Facebook accounts to run ads publicly pressuring their ransomware victims into paying up. On the evening of Monday, Nov. ”

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Ransomware Accountability Hacking Advertising 363

Krebs on Security

APRIL 18, 2022

Conti — one of the most ruthless and successful Russian ransomware groups — publicly declared during the height of the COVID-19 pandemic that it would refrain from targeting healthcare providers. But according to Microsoft and an advisory from the U.S. National Security Agency (NSA).

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Healthcare Ransomware Cybersecurity Malware 333

Krebs on Security

JANUARY 28, 2022

In December 2021, researchers discovered a new ransomware-as-a-service named ALPHV (a.k.a. “ BlackCat “), considered to be the first professional cybercrime group to create and use a ransomware strain written in the Rust programming language. Image: Varonis. Image: Varonis. The upshot? ” Meanwhile, the U.S.

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Schneier on Security

JANUARY 10, 2023

I don’t know how much of a thing this will end up being, but we are seeing ChatGPT-written malware in the wild. “It’s still too early to decide whether or not ChatGPT capabilities will become the new favorite tool for participants in the Dark Web,” company researchers wrote.

Malware 64

Malware Encryption Cybercrime Passwords 64

Krebs on Security

DECEMBER 10, 2020

Payment card processing giant TSYS suffered a ransomware attack earlier this month. But the company says the malware did not jeopardize card data, and that the incident was limited to administrative areas of its business. FS-ISAC said at least eight financial institutions were hit with ransomware attacks in the previous four months.

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Ransomware Financial Services Cyber threats Banking 357

Krebs on Security

NOVEMBER 17, 2022

Peter is an IT manager for a technology manufacturer that got hit with a Russian ransomware strain called “ Zeppelin ” in May 2020. There are multiple examples of ransomware groups doing just that after security researchers crowed about finding vulnerabilities in their ransomware code.

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Ransomware Encryption Backups Manufacturing 352

Security Affairs

FEBRUARY 13, 2025

A November 2024 RA World ransomware attack on an Asian software firm used a tool linked to China-linked threat actors. Broadcom researchers reported that threat actors behind an RA World ransomware attack against an Asian software and services firm employed a tool that was explosively associated in the past with China-linked APT groups.

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Krebs on Security

MARCH 2, 2021

PrismHR , a company that sells technology used by other firms to help more than 80,000 small businesses manage payroll, benefits, and human resources, has suffered what appears to be an ongoing ransomware attack that is disrupting many of its services. Hopkinton, Mass.-based PrismHR said it detected the activity on Sunday.

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Ransomware Small Business Insurance Software 333

Security Affairs

DECEMBER 7, 2024

The 8Base ransomware group attacked Croatia’s Port of Rijeka, stealing sensitive data, including contracts and accounting info. A cyber attack hit the Port of Rijeka in Croatia, the 8Base ransomware group claimed responsibility for the security breach. The Port of Rijeka (Luka Rijeka d.d.),

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SecureWorld News

MARCH 13, 2025

A recent report from Tenable highlights how DeepSeek R1, an open-source AI model, can generate rudimentary malware, including keyloggers and ransomware. While the AI-generated malware required manual debugging to function properly, its mere existence signals an urgent need for security teams to adapt their defenses.

Malware 101

Malware Cybersecurity Cyber threats Threat Detection 101

SecureWorld News

FEBRUARY 20, 2025

The FBI, CISA, and MS-ISAC have issued a joint cybersecurity advisory warning organizations about Ghost (Cring) ransomware, a sophisticated cyber threat that has been compromising critical infrastructure, businesses, and government entities worldwide.

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Ransomware IoT Encryption Social Engineering 108

Schneier on Security

MAY 18, 2021

A lot of Russian malware — the malware that targeted the Colonial Pipeline, for example — won’t install on computers with a Cyrillic keyboard installed. Will installing one of these languages keep your Windows computer safe from all malware? Absolutely not.

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Ransomware Malware Cybercrime 363

Digital Shadows

NOVEMBER 12, 2024

By containing a threat as quickly as possible, organizations drastically limit incident impact, preventing damaging consequences such as data exfiltration, malware deployment, lateral movement, and operational downtime. On average, companies in the construction industry contain a threat within about 5 hours.

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Ransomware Phishing Cyber threats Malware 111

Krebs on Security

SEPTEMBER 23, 2020

The company declined to discuss the exact cause of the disruption, but their response so far is straight out of the playbook for responding to ransomware incidents. Plano, Texas-based Tyler Technologies [ NYSE:TYL ] has some 5,300 employees and brought in revenues of more than $1 billion in 2019.

Technology 357

Technology Ransomware Software Government 357

Malwarebytes

JANUARY 9, 2025

Small businesses and boutique organizations should use caution when leaning on browser-friendly artificial intelligence (AI) tools to generate ideas, content, and marketing copy, as a set of Google Chrome extensions were recently compromised to deliver info-stealing malware disguised as legitimate updates.

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Malware Small Business Artificial Intelligence VPN 125

Krebs on Security

DECEMBER 4, 2024

In January 2022, KrebsOnSecurity identified a Russian man named Mikhail Matveev as “ Wazawaka ,” a cybercriminal who was deeply involved in the formation and operation of multiple ransomware groups. government indicted Matveev as a top ransomware purveyor a year later, offering $10 million for information leading to his arrest.

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Cybercrime Ransomware Cryptocurrency Government 225

Security Affairs

DECEMBER 26, 2024

A ransomware attack on Pittsburgh Regional Transit (PRT) was the root cause of the agency’s service disruptions. On December 23, 2024, Pittsburgh Regional Transit (PRT) announced it was actively responding to a ransomware attack that was first detected on Thursday, December 19.

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