Heimadal Security

APRIL 24, 2023

DNS-Layer Security protects users from threats that arise from inbound and outbound traffic. It refers to monitoring communications between endpoints and the internet at a DNS-layer level. Imagine the DNS layer security as a gatekeeper who makes sure that all potentially malicious visitors remain at the gate. But that`s not all.

DNS 98

DNS Ransomware Internet Internet 98

eSecurity Planet

NOVEMBER 10, 2023

DNS security protects the domain name system (DNS) from attackers seeking to reroute traffic to malicious sites. Since a majority of business IT traffic now accesses or passes through the internet, DNS plays an increasingly important — and vulnerable — role. in the DNS cache for more efficient delivery of information to users.

DNS 111

DNS DDOS Encryption Authentication 111

CSO Magazine

MARCH 14, 2023

During every quarter last year, between 10% and 16% of organizations had DNS traffic originating on their networks towards command-and-control (C2) servers associated with known botnets and various other malware threats, according to a report from cloud and content delivery network provider Akamai.

DNS 128

DNS Malware Ransomware 128

Malwarebytes

JUNE 1, 2022

Everything from rootkits to ransomware threaten not just financial losses, but also significant network downtime and reputational damage as well. That’s where DNS filtering comes in. But first, DNS in a nutshell. So normally, every time your customer types in your web address, their computer makes a request to a DNS server.

DNS 99

DNS DDOS Phishing Spyware 99

Cisco Security

MARCH 11, 2021

After examining topics such as the MITRE ATT&CK framework , LOLBins , and others, this release will look at DNS traffic to malicious sites. We’ll also look at malicious DNS activity—the number of queries malicious sites receive. Organizations and malicious DNS activity. Overview of analysis. Cryptomining.

DNS 91

DNS Phishing Ransomware Internet 91

The Last Watchdog

MARCH 28, 2019

The Spamhaus attacker, for instance, noticed that there were literally millions of domain name system (DNS) resolvers that remained wide open all over the internet. DNS resolvers were the early building blocks of the internet: they resolved a domain names, such as spamhaus.org, to a specific IP address. A10 Networks’ report found 6.3

DDOS 263

DDOS IoT DNS Internet 263

Malwarebytes

MARCH 5, 2024

It’s also common practice for companies to create CNAME (Canonical Name) DNS records that alias a subdomain to another domain or subdomain. The Sender Policy Framework (SPF) is an anti-spam DNS record that sets out what domains and IP addresses can send email for a particular domain. Get a free trial below.

DNS 124

DNS Marketing Ransomware 124

Cisco Security

OCTOBER 28, 2021

Ransomware is more dangerous than ever before. As reported by Reuters , the ransomware infection didn’t just disrupt the flow of fuel to cities directly served by the Colonial Pipeline. Simultaneously, ransomware actors are looking to profit off successful attacks as much as possible.

Ransomware 145

Ransomware DNS Marketing Engineering 145

Cisco Security

AUGUST 11, 2021

The REvil ransomware family has been in the news due to its involvement in high-profile incidents, such as the JBS cyberattack and the Kaseya supply chain attack. The threat actors behind REvil attacks operate under a ransomware-as-a-service model. Figure 1-DNS activity surrounding REvil/Sodinokibi.

Ransomware 145

Ransomware DNS Encryption Backups 145

Webroot

APRIL 13, 2021

Ransomware attacks generate big headlines when the targets are government entities, universities and healthcare organizations. But there’s one increasingly frequent target of ransomware attacks that tends to slip under the radar. This includes essential security measures like firewalls, endpoint protection and DNS protection.

Ransomware 133

Ransomware DNS Firewall Security Awareness 133

Security Affairs

JULY 15, 2024

Multiple ransomware groups were spotted exploiting a vulnerability, tracked as CVE-2023-27532, in Veeam Backup & Replication. The initial access to the target network was via Secure Shell (SSH) protocol and attackers exfiltrated critical data before deploying Akira ransomware the following day.

Backups 139

Backups Ransomware Antivirus DNS 139

eSecurity Planet

SEPTEMBER 2, 2021

Now it may have an even more important role to play: preventing ransomware attacks. Rampant Ransomware Attacks. Ransomware attacks have been surging in 2021, with the highest-profile one the Colonial Pipeline attack that nearly shut down the U.S. Many ransomware attacks seem brutal, cruel, and deceptive.

Ransomware 130

Ransomware DNS Small Business Authentication 130

Security Affairs

JUNE 24, 2021

A new Trojan written in the Go programming language, tracked as ChaChi, was involved in ransomware attacks against government agencies and US schools. Chashell is a reverse shell over DNS provider, while Chisel is a port-forwarding tool. This leaves their networks more vulnerable to exploits and ransomware attacks.”

Ransomware 144

Ransomware Education DNS Backups 144

Security Affairs

NOVEMBER 5, 2021

A new threat actor is exploiting ProxyShell flaws in attacks aimed at Microsoft Exchange servers to deploy the Babuk Ransomware in corporate networks. Talos researchers warn of a new threat actor that is hacking Microsoft Exchange servers by exploiting ProxyShell flaws to gain access to corporate and deploy the Babuk Ransomware.

Ransomware 145

Ransomware Backups Encryption DNS 145

Security Affairs

OCTOBER 29, 2020

FBI and the DHS’s CISA agencies published a joint alert to warn hospitals and healthcare providers of imminent ransomware attacks from Russia. The government agencies receive information about imminent attacks, threat actors are using the TrickBot botnet to deliver the infamous ransomware to the infected systems. Pierluigi Paganini.

Healthcare 145

Healthcare Ransomware Cybercrime Advertising 145

Security Affairs

NOVEMBER 19, 2020

Managed web hosting provider Managed.com was hit with REvil ransomware that forced it to take down their servers and web hosting systems. Managed web hosting provider Managed.com was hit by a REvil ransomware attack over the weekend that took their servers and web hosting systems offline. “November 17, 2020 – On Nov.16,

Ransomware 142

Ransomware DNS Encryption Hacking 142

Security Affairs

FEBRUARY 23, 2019

A new piece of ransomware called Cr1ptT0r infects embedded systems and network attached storage (NAS) devices exposed online. A new piece of ransomware called Cr1ptT0r was discovered by experts, it infects embedded systems and network attached storage (NAS) devices exposed online. No extension added to locked files.

Ransomware 111

Ransomware DNS Firmware Encryption 111

CyberSecurity Insiders

FEBRUARY 16, 2023

We all know that backup servers are only the sole saviors to an organization when a ransomware incident strikes their IT infrastructure. Block outbound DNS Requests – Whenever a malware strikes a server, the first thing it does is to establish a connection with a command-and-control server.

Backups 116

Backups Ransomware DNS Encryption 116

Security Affairs

JANUARY 19, 2025

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

Malware 63

Malware Artificial Intelligence DNS Ransomware 63

Cisco Security

JULY 22, 2021

Ransomware. fuel pipeline, and one of the world’s largest meat processing plants have put a giant spotlight on ransomware. fuel pipeline, and one of the world’s largest meat processing plants have put a giant spotlight on ransomware. But first, what is ransomware? Web security: Most ransomware attacks use DNS.

Ransomware 145

Ransomware DNS Authentication Cybercrime 145

Hacker Combat

JULY 5, 2021

A new malicious software (ransomware) variant that leverages Golang has been released. CrowdStrike obtained a specimen of the new ransomware strain, which has not been named yet. ” Still, unlike FiveHands and HelloKitty, the new ransomware variant relies on a Go-based packer that encrypts its C++ malicious software payload.

Ransomware 133

Ransomware DNS Software Encryption 133

Krebs on Security

AUGUST 23, 2024

A core part of the way these things find each other involves a Windows feature called “ DNS name devolution ,” a kind of network shorthand that makes it easier to find other computers or servers without having to specify a full, legitimate domain name for those resources. ” Caturegli said setting up an email server record for memrtcc.ad

DNS 329

DNS Internet Internet Authentication 329

Security Affairs

JANUARY 20, 2022

The Federal Bureau of Investigation (FBI) officially linked the Diavol ransomware operation to the infamous TrickBot gang. The FBI officially linked the Diavol ransomware operation to the infamous TrickBot gang , the group that is behind the TrickBot banking trojan. “The FBI first learned of Diavol ransomware in October 2021.

Ransomware 129

Ransomware Banking Malware Encryption 129

Malwarebytes

JUNE 6, 2022

The post A week in security (May 30 – June 5) appeared first on Malwarebytes Labs.

DNS 139

DNS Internet Internet Phishing 139

Malwarebytes

JANUARY 27, 2025

Mastercard fixes potentially catastrophic DNS typo Stay safe! Our business solutions remove all remnants of ransomware and prevent you from getting reinfected. Want to learn more about how we can help protect your business? Get a free trial below. TRY NOW

DNS 70

DNS Manufacturing Ransomware 70

Security Boulevard

AUGUST 7, 2024

HYAS Protect protective DNS uses advanced data analytics to proactively block cyber threats, a feature unavailable in legacy systems relying on static DNS filtering. AV-TEST , one of the cybersecurity industry’s most trusted evaluators, rates HYAS as the most effective protective DNS solution on the market. What Is HYAS Protect?

DNS 64

DNS Government Cyber threats IoT 64

Krebs on Security

APRIL 13, 2022

” “These could be the kind of vulnerabilities which appeal to ransomware operators as they provide the potential to expose critical data,” said Kevin Breen , director of cyber threat research at Immersive Labs. CVSS scores and are listed as “exploitation more likely by Microsoft.”

DNS 326

DNS Internet Internet Firewall 326

Security Boulevard

AUGUST 6, 2024

Threat Intelligence Report Date: August 6, 2024 Prepared by: David Brunsdon, Threat Intelligence - Security Engineer, HYAS Dynamic DNS (DDNS) is a service that automatically updates the Domain Name System (DNS) in real-time to reflect changes in the IP addresses of a domain.

DNS 69

DNS Malware Social Engineering Engineering 69

Malwarebytes

AUGUST 18, 2022

With Malwarebytes DNS filtering , however, you can prevent a large swath of phishing attacks. Our DNS filtering module extends our Nebula platform to help prevent risks introduced from nefarious websites and downloadable web content. How to block phishing domains with DNS filtering. Photo credits: Phishing.org.

DNS 75

DNS Phishing Small Business Spyware 75

Security Boulevard

JULY 9, 2024

Operational resiliency necessitates intelligence, visibility, and confidence: the three foundational pillars of protective DNS (PDNS). This makes malware command-and-control, phishing attacks, DNS tunneling and a number of other attacks significantly less effective. But Wait, What Is Protective DNS?

DNS 64

DNS Cyber threats Cyber Attacks Phishing 64

Security Affairs

AUGUST 18, 2021

Researchers conducted a new analysis of the Diavol ransomware and found new evidence of the link with the gang behind the TrickBot botnet. In July, researchers from Fortinet reported that a new ransomware family, tracked as Diavol, might have been developed by Wizard Spider , the cybercrime gang behind the TrickBot botnet.

Ransomware 103

Ransomware DNS Cybercrime Malware 103

Security Affairs

JANUARY 19, 2025

CISA adds Aviatrix Controllers vulnerability to its Known Exploited Vulnerabilities catalog ESET detailed a flaw that could allow a bypass of the Secure Boot in UEFI systems Russia-linked APT Star Blizzard targets WhatsApp accounts Prominent US law firm Wolf Haldenstein disclosed a data breach Clop Ransomware exploits Cleo File Transfer flaw: dozens (..)

Spyware 68

Spyware Data breaches DNS Artificial Intelligence 68

IT Security Guru

AUGUST 16, 2021

Ransomware is a crime that is predominantly financially motivated, yet the effects of attacks are far broader and more profound than just the financial impact. They can simply lease variants of ransomware in the same way that many organisations lease SaaS products. Small-to-medium businesses will also be heavily impacted.

Ransomware 133

Ransomware Government Healthcare Education 133

Cisco Security

DECEMBER 1, 2021

Ransomware is more dangerous than ever before. Ransomware actors are looking to profit from successful attacks as much as possible. These sources of collateral damage explain why ransomware attacks have become so costly, with Bloomberg reporting that some companies end up paying tens of millions of dollars in ransom.

Ransomware 97

Ransomware DNS Marketing Engineering 97

eSecurity Planet

SEPTEMBER 29, 2021

Ransomware is everywhere these days, striking fear into the hearts of IT and business managers alike. And studies support that perception, showing ransomware growing in both prevalence and effectiveness. Best Ransomware Removal Tools. Here we’ll focus on removal tools. Protect against cloud threats and misconfiguration.

Ransomware 111

Ransomware VPN Backups Malware 111

SecureList

DECEMBER 18, 2020

In the initial phases, the Sunburst malware talks to the C&C server by sending encoded DNS requests. These requests contain information about the infected computer; if the attackers deem it interesting enough, the DNS response includes a CNAME record pointing to a second level C&C server. avsvmcloud[.]com” avsvmcloud[.]com”

DNS 76

DNS Telecommunications Malware Encryption 76

Security Affairs

FEBRUARY 13, 2025

The group also created the NotPetya ransomware that hit hundreds of companies worldwide in June 2017. Since late 2021, the subgroup has targeted networks by modifying Outlook Web Access (OWA) sign-in pages and DNS configurations. This infrastructure technique is versatile, supporting operations globally.

Telecommunications 104

Telecommunications DNS Passwords Hacking 104