Krebs on Security

FEBRUARY 4, 2019

Spammy Bear targeted dormant but otherwise legitimate domains that had one thing in common: They all at one time used GoDaddy’s hosted Domain Name System (DNS) service. The domains documented by MyOnlineSecurity all had their DNS records altered between Jan. 31 and Feb. 22 report on the GoDaddy weakness. Image: Farsight Security.

DNS 233

DNS Ransomware Accountability Internet 233

Krebs on Security

FEBRUARY 18, 2019

” The DNS part of that moniker refers to the global “ D omain N ame S ystem ,” which serves as a kind of phone book for the Internet by translating human-friendly Web site names (example.com) into numeric Internet address that are easier for computers to manage. Twelve days after the FireEye report, the U.S.

DNS 263

DNS Internet Internet Government 263

Krebs on Security

JANUARY 22, 2019

In July 2018, email users around the world began complaining of receiving spam which began with a password the recipient used at some point in the past and threatened to release embarrassing videos of the recipient unless a bitcoin ransom was paid. That’s according to Ron Guilmette , a dogged anti-spam researcher.

DNS 229

DNS Internet Internet Computers and Electronics 229

CyberSecurity Insiders

OCTOBER 22, 2021

CrowdStrike security researchers have discovered that a hacking group dubbed LightBasin aka UNC1945 has been hiding in the networks of renowned telecom networks from the past 5 years, monitoring all their business operations and sending censorious data to remote servers.

Cyber Attacks 139

Cyber Attacks Telecommunications DNS Government 139

The Last Watchdog

MARCH 28, 2019

His blog, Krebs on Security , was knocked down alright. And since Dyn routed traffic, not just to Krebs’ blog, but also to Twitter, Spotify, Netflix, Amazon, Tumblr, Reddit and PayPal, those popular websites were offline for some 12 hours, frustrating millions. Related: IoT botnets now available for economical DDoS blasts.

DDOS 263

DDOS IoT DNS Internet 263

Cisco Security

JUNE 13, 2022

It contains sections such as “impact,” “reproduction,” and “remediation” to help us understand what is at stake and what we need to fix. For example: IMPACT : An SSH server which supports password authentication is susceptible to brute-forcing attacks. The challenge. In cyber security, we are used to two types of stories.

DNS 106

DNS Engineering Authentication Malware 106

Troy Hunt

SEPTEMBER 26, 2018

On the one hand, I despise the obnoxious ads that are forced down our throats at what seems like every turn. Somewhere in the middle is a responsible approach, for example the sponsorship banner you see at the top of this blog. I have a love-hate relationship with ad blockers. That is all. No HTML tags. No tracking.

DNS 274

DNS Risk 274

Webroot

MARCH 9, 2021

Many successful attacks could actually be prevented if users just knew what to look for. In that spirit, we put together this blog post to explain the different hacker types and methods they use against us. DNS (Domain Name System) is especially vulnerable. appeared first on Webroot Blog. The Impersonator.

Hacking 116

Hacking DNS Surveillance Cybercrime 116

Fox IT

AUGUST 11, 2022

This Saitama implant uses DNS as its sole Command and Control channel and utilizes long sleep times and (sub)domain randomization to evade detection. As no server-side implementation was available for this implant, our detection engineers had very little to go on to verify whether their detection would trigger on such a communication channel.

DNS 66

DNS Engineering Malware Encryption 66

Malwarebytes

MAY 10, 2022

In this blog post, we describe the attack flow and share details about the Saitama backdoor. Calls the “eNotif’ function which is used to send a notification of each steps of macro execution to its server using the DNS protocol. The email contained a malicious Excel document that drops a new backdoor named Saitama.

Government 143

Government DNS Telecommunications Accountability 143

Webroot

AUGUST 10, 2022

When was the last time you secretly smiled when ransomware gangs had their bitcoin stolen, their malware servers shut down, or were forced to disband? So, what does this mean for your business, your customers, your partners, and even your family as you vie to stay safe online and protect what matters most—data?

Threat Reports 83

Threat Reports DNS Phishing Malware 83

Cisco Security

MARCH 11, 2021

To do so, it’s important to know what security issues are most likely to crop up within your organization, and their potential impact. Reading up on these trends can inform you as to what types of attacks are currently active. We’ll also look at malicious DNS activity—the number of queries malicious sites receive.

DNS 138

DNS Phishing Ransomware Internet 138

Krebs on Security

MARCH 2, 2020

HYAS said it quickly notified the French national computer emergency team and the FBI about its findings, which pointed to a dynamic domain name system (DNS) provider on which the purveyors of this attack campaign relied for their various malware servers.

DNS 252

DNS Penetration Testing Malware Hacking 252

Security Affairs

JANUARY 27, 2023

Microsoft warns customers to patch their Exchange servers because attackers always look to exploit unpatched installs. Microsoft published a post to urge its customers to protect their Exchange servers because threat actors actively attempt to exploit vulnerabilities in unpatched installs. ” reads the post published by Microsoft.

Social Engineering 97

Social Engineering DNS Engineering Hacking 97

Security Affairs

JUNE 17, 2022

Volexity researchers discovered that the zero-day vulnerability, tracked as CVE-2022-1040 , in Sophos Firewall was exploited by Chinese threat actors to compromise a company and cloud-hosted web servers it was operating. These attacks aimed to further breach cloud-hosted web servers hosting the organization’s public-facing websites.”

Firewall 127

Firewall DNS Authentication Malware 127

Krebs on Security

AUGUST 22, 2023

In a blog post published last month, Cisco Talos said it was seeing a worrisome “increase in the rate of high-sophistication attacks on network infrastructure.” In a blog post published last month, Cisco Talos said it was seeing a worrisome “increase in the rate of high-sophistication attacks on network infrastructure.”

Ransomware 181

Ransomware DNS Firewall 181

Webroot

FEBRUARY 16, 2021

In recent months, you’ve likely heard about DNS over HTTPS , also known as DNS 2.0 and DoH, which is a method that uses the HTTPS protocol to encrypt DNS requests, shielding their contents from malicious actors and others who might misuse such information. Ultimately, this DNS privacy upgrade has been a long time coming.

DNS 69

DNS Encryption Firewall Network Security 69

McAfee

DECEMBER 10, 2021

What is it? This applies to both server-side and client-side applications since the main requirements for the vulnerability are any attacker-controlled input field and this input being passed to the log. What can be done about this? To orchestrate this attack, an attacker can use several different JNDI lookups.

DNS 125

DNS Architecture Internet Internet 125

NetSpi Technical

OCTOBER 19, 2023

It’s worth noting that this is a Preview release of this functionality, and is likely going to differ from what’s eventually fully released. What about if we bypass those proxy settings? Here I present a quick overview of this functionality and some ways it may be used. We can then use the results in our workbook.

DNS 97

DNS Internet Internet Phishing 97

Cisco Security

MARCH 16, 2021

In this blog I’ll describe two recent privacy advances—DNS over HTTPS (DoH) and QUIC—and what we’re doing to maintain visibility. In this blog I’ll describe two recent privacy advances—DNS over HTTPS (DoH) and QUIC—and what we’re doing to maintain visibility. DNS message encryption (control plane) is new.

Encryption 85

Encryption DNS Threat Detection Internet 85

Cisco Security

AUGUST 11, 2021

We looked at REvil, also known as Sodinokibi or Sodin, earlier in the year in a Threat Trends blog on DNS Security. In it we talked about how REvil/Sodinokibi compromised far more endpoints than Ryuk, but had far less DNS communication. Figure 1-DNS activity surrounding REvil/Sodinokibi.

Ransomware 126

Ransomware DNS Encryption Backups 126

SecureList

JULY 25, 2022

One of our industry partners, Qihoo360, published a blog post about an early variant of this malware family in 2017. Before getting into the various components that compose this rootkit, we would like to provide a high-level view of what it tries to accomplish. Affected devices. an evil maid attack scenario).

Firmware 144

Firmware DNS Malware Technology 144

Webroot

MARCH 29, 2021

A firewall with the right threat intelligence embedded could have blocked communications with the command-and-control server thus preventing a Trojanized Orion install from connecting back to the attackers and stopping them from furthering the attack. This is what we mean when we stress the importance of a layered defense.

Hacking 116

Hacking DNS Firewall Malware 116

eSecurity Planet

MARCH 14, 2022

They even created a Linux version , as Linux servers are prevalent in cloud computing environments and the detection rate of a Linux variant would be pretty low. A few weeks ago, security researchers found evidence of Cobalt Strike payloads in Microsoft SQL servers. It’s a comprehensive platform that emulates very realistic attacks.

Energy and Utilities 131

Energy and Utilities DNS Penetration Testing Ransomware 131

Security Boulevard

DECEMBER 5, 2022

What I've been up to? I've also recently updated the BIO on my Twitter and LinkedIn accounts and I've been also pretty active on Facebook and Mastodon including Xakep.bg's Discord server where I recently held a presentation at Cyber Security Talks Bulgaria and I'll soon feature the actual photos and video from the event. Stay tuned!

Cybercrime 52

Cybercrime DNS Accountability Marketing 52

Security Boulevard

MAY 17, 2023

Most of these steps could’ve been blocked with the aid of DNS protection. To be able to finally tackle the real work implementing proper threat protection, it’s crucial to know exactly what happened. The threat actor’s methodology wasn’t unique — they used a six-step approach that can be mapped directly to cyber attack frameworks.

Data breaches 52

Data breaches DNS Malware Phishing 52

Troy Hunt

NOVEMBER 25, 2020

In part 1 of this series, I posited that the IoT landscape is an absolute mess but Home Assistant (HA) does an admirable job of tying it all together. In part 2 , I covered IP addresses and the importance of a decent network to run all this stuff on, followed by Zigbee and the role of low power, low bandwidth devices. Let's dive into it.

IoT 358

IoT Firmware Risk Manufacturing 358

SiteLock

AUGUST 27, 2021

Cybercriminals are constantly crawling the web for targets, and they’ll often go after websites you might not expect, such as a vegan cooking blog. So what does a hacker look for in a website? What can Abby do to protect her website? What can Abby do to protect her website? Joe’s Vegan Blog Cooks Up Comment Spam.

Hacking 98

Hacking DDOS eCommerce Firewall 98

Security Boulevard

JANUARY 17, 2024

This blog post describes methods that SpecterOps consultants have researched to successfully circumvent this technology during offensive assessments. What is RBI and Why Use It? Well, my friend, RBI has many more implications than what the vendors provide at face value. The general concept of RBI is relatively simple.

DNS 62

DNS Penetration Testing Passwords Encryption 62

Webroot

APRIL 14, 2021

DNS protection , in particular, is a must-have under these rules. That’s pushing 5,000 endpoints, including all servers, terminal servers, Macs and PCs.” – James VanderWier, CEO, F1 Solutions. The post What Real Security and Compliance Look like when Managing 5000+ Endpoints appeared first on Webroot Blog.

DNS 65

DNS Cybersecurity 65

Cisco Security

AUGUST 12, 2021

What an experience to be attending the first major cybersecurity conference since the lockdowns of the COVID-19 pandemic. Black Hat is back! Cisco Secure returned as a supporting partner of the Black Hat USA 2021 Network Operations Center (NOC) for the 5 th year ; joining conference producer Informa Tech and its other security partners.

DNS 136

DNS Firewall Phishing Mobile 136

SC Magazine

MAY 4, 2021

Researchers Tuesday released a study that found 21 unique vulnerabilities in the Exim mail server, some of which can be chained together to obtain full remote unauthenticated code execution and gain root privileges. A Shodan search executed by the research found that nearly 4 million Exim servers are exposed to the internet.

Internet 79

Internet Internet DNS Network Security 79

McAfee

FEBRUARY 4, 2021

This blog is part of our SOCwise series where we’ll be digging into all things related to SecOps from a practitioner’s point of view, helping us enable defenders to both build context and confidence in what they do. . And this last one was about injecting into third party libraries. . Ismael: Right! It’s not new.

DNS 102

DNS Firewall Accountability Technology 102

Vipre

JANUARY 27, 2021

Most of you have probably heard about encrypted DNS (DNS-over-HTTPS or DoH, and DNS-over-TLS or DoT) and have noticed that several of the major browser vendors have rolled out support for these newer protocols. But what about at the office? Maybe you don’t even run your own DNS server, so why would you care?

DNS 45

DNS Encryption 45

Cisco Security

MARCH 11, 2021

To do so, it’s important to know what security issues are most likely to crop up within your organization, and their potential impact. Reading up on these trends can inform you as to what types of attacks are currently active. We’ll also look at malicious DNS activity—the number of queries malicious sites receive.

DNS 61

DNS Phishing Ransomware Internet 61

CyberSecurity Insiders

JANUARY 6, 2022

This blog was written by an independent guest blogger. What they don’t realize is that they could be supercharging their productivity. What can a business do to improve its productivity? Secure Sockets Layer (SSL) is a standard security protocol that encrypts the connection between a web browser and a server.

Encryption 134

Encryption Identity Theft Authentication Data breaches 134

Webroot

MAY 25, 2021

Especially in terms of cybersecurity, efficacy is something of an amorphous term; everyone wants it to be better, but what exactly does that mean? What else can you do? It’s just important to demystify it a little so you can decide what kind of solution is right for your needs. And how do you properly measure it?

Phishing 143

Phishing DNS Backups Cyber threats 143