Oblivious DNS-over-HTTPS

Schneier on Security

This new protocol , called Oblivious DNS-over-HTTPS (ODoH), hides the websites you visit from your ISP. Because the DNS query is encrypted, the proxy can’t see what’s inside, but acts as a shield to prevent the DNS resolver from seeing who sent the query to begin with.

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Firefox Enables DNS over HTTPS

Schneier on Security

This is good news : Whenever you visit a website -- even if it's HTTPS enabled -- the DNS query that converts the web address into an IP address that computers can read is usually unencrypted. browsers childpornography dns firefox https mozilla securityengineering terrorism

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Lyceum.NET DNS Backdoor

Security Boulevard

Key Features of this attack: The new malware is a.NET based DNS Backdoor which is a customized version of the open source tool “DIG.net”. The threat actor then leverages the AutoClose() function to drop the DNS backdoor onto the system. DNS Backdoor dropped in the Startup folder.

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What is DNS Spoofing?

Security Boulevard

Domain Name Server (DNS) spoofing is a type of attack in which the DNS records are altered to redirect the online traffic to a spoofed website that resembles the original destination. The post What is DNS Spoofing?

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Costly DNS Attacks on the Rise

Security Boulevard

While awareness of DNS security continues to grow, the cost, frequency and number of attacks remain high, while the pandemic and resulting hybrid work environments have resulted in huge disruption for organizations. The post Costly DNS Attacks on the Rise appeared first on Security Boulevard.

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A DNS flaw impacts a library used by millions of IoT devices

Security Affairs

A vulnerability in the domain name system (DNS) component of the uClibc library impacts millions of IoT products. An attacker can exploit the vulnerability for DNS poisoning or DNS spoofing and redirect the victim to a malicious website instead of the legitimate one.

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DNSSEC: The Secret Weapon Against DNS Attacks 

Security Boulevard

The domain name system (DNS) is known as the phone book of the internet, quickly connecting users from their devices to their desired content. The post DNSSEC: The Secret Weapon Against DNS Attacks appeared first on Security Boulevard.

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How the Saitama backdoor uses DNS tunnelling

Malwarebytes

One of the stealthy communication techniques employed by malware trying to avoid detection is DNS Tunnelling, which hides messages inside ordinary-looking DNS requests. The payload in the attack was a backdoor called Saitama, a finite state machine that used DNS to communicate.

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DigiCert Acquires DNS Made Easy

Dark Reading

The certificate management company plans to integrate DNS services throughout its portfolio

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DNS Security

Adam Shostack

They asked us to look at the value of DNS security, such as when your DNS provider uses threat intel to block malicious sites. Just point to a DNS server like 9.9.9.9). The report is available from GCA’s site: Learn About How DNS Security Can Mitigate One-Third of Cyber Incidents. I’m happy to say that some new research by Jay Jacobs, Wade Baker, and myself is now available, thanks to the Global Cyber Alliance.

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3 ways DNS filtering can save SMBs from cyberattacks

Malwarebytes

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. The DNS server, in turn, tells the computer where to go.

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DNS Over HTTPS: Facts You Should Know

Security Boulevard

A new protocol, DNS over HTTPS (DoH), is a sensation in modern times, designed for enterprise security products and policies. A combination of DNS protocol and HTTPS protocol, DoH affects businesses, organisations, and regular users. What is DNS over HTTPS (DoH)?

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New DNS Hijacking Attacks

Schneier on Security

DNS hijacking isn't new, but this seems to be an attack of uprecidented scale: Researchers at Cisco's Talos security division on Wednesday revealed that a hacker group it's calling Sea Turtle carried out a broad campaign of espionage via DNS hijacking, hitting 40 different organizations.

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New DNS Spoofing Threat Puts Millions of Devices at Risk

eSecurity Planet

Security researchers have uncovered a critical vulnerability that could lead to DNS spoofing attacks in two popular C standard libraries that provide functions for common DNS operations. Understanding DNS Spoofing Attacks. Also read: How to Prevent DNS Attacks.

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Threat Trends: DNS Security, Part 1

Cisco Security

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.

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Blast Radius: DNS Takeovers

SecurityTrails

Patrik Hudak joins us to showcase his research into the impact DNS takeovers can have on companies. research

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Threat Trends: DNS Security, Part 2

Cisco Security

This is what we covered in part one of this Threat Trends release on DNS Security, using data from Cisco Umbrella , our cloud-native security service. This time we’ll be comparing yearly totals of DNS traffic to malicious sites, by industry. percent lower in overall DNS traffic.

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DNS over HTTPS, DNS over TLS explained: Encrypting DNS traffic

CSO Magazine

Being the backbone of the internet, the Domain Name System (DNS) protocol has undergone a series of improvements and enhancements over the past few years.

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Details on Recent DNS Hijacking

Schneier on Security

At the end of January the US Department of Homeland Security issued a warning regarding serious DNS hijacking attempts against US government domains. Brian Krebs wrote an excellent article detailing the attacks and their implications. Strongly recommended

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What is DNS Poisoning? (aka DNS Spoofing) | Keyfactor

Security Boulevard

DNS poisoning, also known as DNS cache poisoning or DNS spoofing, is a highly deceptive cyber attack in which hackers redirect web traffic toward fake web servers and phishing websites. The post What is DNS Poisoning?

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Iranian hackers target energy sector with new DNS backdoor

Bleeping Computer

The Iranian Lycaeum APT hacking group uses a new.NET-based DNS backdoor to conduct attacks on companies in the energy and telecommunication sectors. [.].

10 Threat Trends in DNS Security

Dark Reading

Cisco Security examines Cisco Umbrella data for trends in malicious DNS activity during 2020

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Don’t Get ‘Shawshanked’ by DNS Tunneling 

Security Boulevard

Since the onset of the pandemic, cyberattackers have increasingly looked to leverage DNS channels to steal data, launch DDoS attacks and deploy malware—and the cost of these attacks is rising. The post Don’t Get ‘Shawshanked’ by DNS Tunneling appeared first on Security Boulevard.

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Microsoft: Recent Windows Server updates cause DNS issues

Bleeping Computer

Microsoft has addressed a new known issue causing DNS stub zones loading failures that could lead to DNS resolution issues on Windows Server 2019 systems. [.].

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How DNS filtering can help protect your business from Cybersecurity threats

CyberSecurity Insiders

The Domain Name System (DNS) is an important tool that connects devices and services together across the Internet. Managing your DNS is essential to your IT cybersecurity infrastructure. When poorly managed, DNS can become a huge landscape for attackers. How does DNS work?

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Unpatched DNS bug affects millions of routers and IoT devices

Bleeping Computer

A vulnerability in the domain name system (DNS) component of a popular C standard library that is present in a wide range of IoT products may put millions of devices at DNS poisoning attack risk. [.].

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Threat Trends: DNS Security

Cisco Security

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.

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How DNS attacks threaten organizations

Tech Republic Security

Application downtime was the most significant side effect of a DNS attack, according to EfficientIP

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What Is DNS And Why Should Your Business Care?

Adam Levin

Department of Homeland Security issued an emergency directive in January 2019 giving government agencies ten days to verify that they weren’t compromised by DNS hijacking. ICANN has been pointing out vulnerabilities in the DNS system since at least 2001 , and for the better part of the last decade urging companies to adopt the more secure Domain Name System Security Extensions, or DNSSEC. . What Is DNS and How Does It Get Hijacked? The U.S.

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What Is DNS Spoofing and How Is It Prevented?

Security Boulevard

What Is DNS Spoofing and How Is It Prevented? What Is the DNS and DNS Server? . To fully understand DNS spoofing, it’s important to understand DNS and DNS servers. The DNS “domain name system” is then what translates the domain name into the right IP address.

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Iran-linked Lyceum APT adds a new.NET DNS Backdoor to its arsenal

Security Affairs

Iran-linked Lyceum APT group uses a new.NET-based DNS backdoor to target organizations in the energy and telecommunication sectors. The DNS backdoor borrows the code from an open-source tool named DIG.net , it was used to perform “DNS hijacking.”

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TsuNAME flaw exposes DNS servers to DDoS attacks

Security Affairs

A flaw in some DNS resolvers, tracked as TsuNAME, can allow attackers to launch DDoS attacks against authoritative DNS servers. domains), and the Information Science Institute at the University of Southern California has discovered a vulnerability, named TsuNAME, in some DNS resolvers.

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How to define DNS in Docker containers

Tech Republic Security

Jack Wallen shows you how to configure specific DNS servers for your Docker container deployments

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Introducing Malwarebytes DNS Filtering module: How to block sites and create policy rules

Malwarebytes

We’re happy to announce Malwarebytes DNS Filtering, a new module for the Nebula platform which helps block access to malicious websites and limit threats introduced by suspicious content. Give this DNS rule a name and then select the policies you want to include.

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Bugs in Managed DNS Services Cloud Let Attackers Spy On DNS Traffic

The Hacker News

Cybersecurity researchers have disclosed a new class of vulnerabilities impacting major DNS-as-a-Service (DNSaaS) providers that could allow attackers to exfiltrate sensitive information from corporate networks. "We

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Introduction of DNS tunneling and how attackers use it.

Quick Heal Antivirus

What is DNS? DNS (Domain Name System) is a service that converts hostnames to IP addresses. The post Introduction of DNS tunneling and how attackers use it. Cybersecurity Uncategorized #DNS #DNSTunneling Malware

DNS Filtering: A Top Battle Front Against Malware and Phishing

Threatpost

Peter Lowe with DNSFilter discusses the science behind domain name system (DNS) filtering and how this method is effective in blocking out phishing and malware. Podcasts black list content filtering DNS dns filtering Domain Name System internet filtering malware Phishing

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NAME:WRECK DNS Bugs: What You Need to Know

Security Boulevard

That’s because the Domain Name System (DNS) protocol does a good job of seamlessly routing users to different IP addresses that are all associated with a single domain name. […]… Read More. The post NAME:WRECK DNS Bugs: What You Need to Know appeared first on The State of Security.

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Microsoft Adds DNS-Over-HTTPS Support for Windows 10 Insiders

Threatpost

Microsoft is letting Windows Insiders test-drive DNS-over-HTTPS protocol in a pre-release build of Windows 10. Privacy Web Security chrome DNS DNS over HTTPS DNS-over-HTTPS service DoH DOT Firefox google HTTPS Microsoft Mozilla Windows 10 windows 10 build Windows Insider

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B1txor20 Linux botnet use DNS Tunnel and Log4J exploit

Security Affairs

Researchers uncovered a new Linux botnet, tracked as B1txor20, that exploits the Log4J vulnerability and DNS tunnel. “In short, B1txor20 is a Backdoor for the Linux platform, which uses DNS Tunnel technology to build C2 communication channels.

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DNS Global Outage Affected Websites and Online Services

Heimadal Security

A global DNS outage related to the Akamai company made quite a stir on Thursday. The post DNS Global Outage Affected Websites and Online Services appeared first on Heimdal Security Blog. Cybersecurity News DNS dns security global outage

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Out of Band (OOB) Data Exfiltration via DNS

The State of Security

While there were plenty of interesting topics taught, one that caught my attention was Out-of-Band (OOB) Data Exfiltration using DNS. The post Out of Band (OOB) Data Exfiltration via DNS appeared first on The State of Security.

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Out of Band (OOB) Data Exfiltration via DNS

Security Boulevard

While there were plenty of interesting topics taught, one that caught my attention was Out-of-Band (OOB) Data Exfiltration using DNS. The post Out of Band (OOB) Data Exfiltration via DNS appeared first on The State of Security.

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