CSO Magazine

APRIL 13, 2023

Domain name system (DNS) tunneling is a pervasive threat that enables hackers to get any data in and out of a company's internal network while bypassing most firewalls. But DNS tunneling essentially smuggles hostile traffic through DNS ports, which makes these attacks difficult to detect and mitigate.

DNS 83

DNS Risk Firewall Internet 83

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

CSO Magazine

APRIL 19, 2023

The Domain Name System (DNS) is often referred to as the phone book of the internet. DNS translates web addresses, which people use, into IP addresses, which machines use. But DNS was not designed with security in mind. This has only worsened with the adoption of encrypted DNS, known as DNS-over-HTTPS (DoH).

DNS 70

DNS Encryption Internet Internet 70

Adam Levin

MARCH 21, 2019

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. Today, less than 20% of DNS traffic is secured by DNSSEC, and only three percent of Fortune 1,000 companies have implemented it.

DNS 141

DNS Government Internet Internet 141

Heimadal Security

AUGUST 8, 2022

The DNS is an essential concept in the online world, and its operations empower users all around the world to access billions of websites every day. But what is DNS? And, perhaps more importantly, how does DNS work? In this article, you will learn the definition of the DNS and how the servers involved in […].

DNS 89

DNS 89

Heimadal Security

MAY 28, 2021

The Domain Name System (DNS), with its quirks, kinks, and compulsion to create unnecessarily long acronyms is a world of its own (design). At this point, any DNS treatise, article, paper, or cheat-sheet, makes Encyclopedia Britannica’s letter “A” volume look like a “quit smoking” leaflet.

DNS 115

DNS Cybersecurity 115

Security Boulevard

MAY 9, 2023

Many articles in the industry and my blog on Deciphering SASE are very clear on the major constituents of SASE. Security functions across these components are […] The post Role of DNS-level security for SASE appeared first on Aryaka. The post Role of DNS-level security for SASE appeared first on Security Boulevard.

DNS 52

DNS Firewall 52

The State of Security

MARCH 31, 2022

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. Back in 2018, NotSoSecure published an Out of Band Exploitation (OOB) CheatSheet.

DNS 93

DNS Hacking 93

Security Boulevard

JULY 28, 2022

Domain Name System (DNS) records are crucial instructions that help servers handle requests from web clients. There are different types of DNS records; many of which we’ve discussed in our previous blog posts. In this article, we’ll introduce you to DNS NS records or Name Server records and why they’re essential to DNS and the […].

DNS 52

DNS Security Awareness Cybersecurity 52

Security Boulevard

JULY 13, 2022

Among the types of DNS records available, TXT records are widely used among administrators. In this article, we’ll look into what a TXT record is and how you can create it. We’ll also show you its format and how to add a TXT record to DNS. What is a DNS TXT Record? […]. Let’s get started! appeared first on EasyDMARC.

DNS 52

DNS Security Awareness Cybersecurity 52

CSO Magazine

AUGUST 25, 2022

The findings are based on DNS data and Akamai’s visibility into carrier and enterprise traffic across different industries and geographies. To read this article in full, please click here This represented a 3% increase compared to Q1 2022, the firm stated, with phishing toolkits playing a key role in malicious domain-related activity.

DNS 69

DNS Phishing Malware Ransomware 69

PerezBox Security

NOVEMBER 4, 2018

If you’re reading this article you’ve interacted with DNS. In fact, you’d be hard pressed to spend any time online and not interact with DNS. The post A Primer on DNS and Security appeared first on PerezBox. Many of us spend very.

DNS 73

DNS Technology Information Security 73

Security Boulevard

MARCH 31, 2022

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. The post Out of Band (OOB) Data Exfiltration via DNS appeared first on Security Boulevard.

DNS 52

DNS Hacking 52

PerezBox Security

DECEMBER 24, 2019

On December 18th, DeepInstinct put out a great article outlining the latest Legion Loader campaign. The post Mitigating Web Threats with CleanBrowsing DNS appeared first on PerezBox. Whether a parent, or organization, this served as a great example to demonstrate the effectiveness.

DNS 64

DNS Information Security 64

Schneier on Security

JUNE 30, 2022

Its ability to enumerate all devices connected to an infected router and collect the DNS lookups and network traffic they send and receive and remain undetected is the hallmark of a highly sophisticated threat actor. More details in the article.

Malware 212

Malware DNS Architecture Hacking 212

CyberSecurity Insiders

APRIL 1, 2022

As CIOs and CTOs are getting extremely worried about distributed denial of service attacks (DDoS), here’s a brief article that can help to enlighten their mind on protecting their corporate networks, without the need of any professional help. Running a DDoS Testing- It is essential, although it is a 3 hour effort to conduct.

DDOS 135

DDOS DNS Education Risk 135

Troy Hunt

JULY 19, 2018

Do get these right per the Microsoft article above, it'll ensure production traffic is hitting production storage accounts and other services you want handled separately between that environment and the staging one. Onto the next piece and per the title, it's going to involve DNS rollover.

DNS 129

DNS Passwords Firewall Authentication 129

Malwarebytes

MAY 4, 2022

Researchers have found a vulnerability in a popular C standard library in IoT products that could allow attackers to perform DNS poisoning attacks against a target device. Similar to other C standard libraries, uClibc provides an extensive DNS client interface that allows programs to readily perform lookups and other DNS-related requests.

IoT 113

IoT DNS Risk Internet 113

CSO Magazine

NOVEMBER 15, 2022

The enterprise-class domain registrar and Domain Name System (DNS) threats mitigator found that 75% of Global 2000s have implemented fewer than half of all domain security measures with Domain-based Message Authentication, Reporting, and Conformance (DMARC) , the only domain security measure with significantly increased adoption since 2020.

DNS 77

DNS Phishing Authentication Risk 77

CSO Magazine

APRIL 26, 2023

The malware uses DNS queries to receive commands from attackers encoded into IP addresses. To read this article in full, please click here

Malware 107

Malware DNS Government 107

Schneier on Security

SEPTEMBER 19, 2018

From a ZDNet article : The malware, known as Pegasus (or Trident), was created by Israeli cyber-security firm NSO Group and has been around for at least three years -- when it was first detailed in a report over the summer of 2016. Motherboard article. Citizen Lab has published a new report about the Pegasus spyware.

Spyware 227

Spyware DNS Malware Internet 227

Schneier on Security

APRIL 18, 2018

Interesting idea : we present Oblivious DNS (ODNS), which is a new design of the DNS ecosystem that allows current DNS servers to remain unchanged and increases privacy for data in motion and at rest. The authoritative server then forwards the DNS request to the appropriate name server, acting as a recursive resolver.

DNS 26

DNS Encryption 26

CSO Magazine

JANUARY 21, 2022

To camouflage their activity, the researchers noted, the hackers used the DuckDNS dynamic DNS service to change the domain names of the command-and-control hosts used for the campaign, which started distributing variants of Nanocore, Netwire, and AsyncRATs to targets in the United States, Italy and Singapore, starting around October 26.

DNS 131

DNS Malware 131

CSO Magazine

JANUARY 19, 2021

Security researchers have found several serious vulnerabilities in dnsmasq, a utility used in many Linux-based systems, especially routers and other IoT devices, to provide DNS services. Dnsmasq is a lightweight tool that provides DNS caching, DNS forwarding and DHCP (Dynamic Host Configuration Protocol) services.

DNS 104

DNS CSO IoT Software 104

Security Boulevard

NOVEMBER 12, 2023

This article reviews what DCV is, the most common DCV methods, and how to choose an appropriate method- for your certificate application. DNS-based validation This method requires the certificate applicant to create a specific Domain Name System (DNS) TXT record in the domain's DNS zone file with content and information specified by the CA.

DNS 75

DNS eCommerce Encryption Phishing 75

CSO Magazine

NOVEMBER 1, 2022

Punycode is a system for representing Unicode characters as ASCII and is used for example to represent internationalized domain names in the DNS system. To read this article in full, please click here In OpenSSL the vulnerable code is used for processing email address name constraints in X.509

DNS 119

DNS 119

CSO Magazine

JUNE 9, 2022

Network telemetry can be used to detect anomalous DNS requests and security tools such as AVs and EDRs should be statically linked to ensure they are not “infected” by userland rootkits." To read this article in full, please click here "Since the malware operates as a userland level rootkit, detecting an infection may be difficult.

DNS 104

DNS Malware 104

CSO Magazine

DECEMBER 21, 2021

The JNDI injection can leverage different protocols such as Lightweight Directory Access Protocol (LDAP), Secure LDAP (LDAPS), Remote Method Invocation (RMI), or Domain Name Service (DNS) to request a malicious payload. To read this article in full, please click here

DNS 113

DNS 113

Heimadal Security

DECEMBER 30, 2022

Fast flux is a DNS-based evasion technique used by botnet operators to stay under the radar. In this article, we will break down what fast flux is and explore how it works, what are its security implications and […]. The post Fast Flux: Definition, How it Works and How to Prevent It appeared first on Heimdal Security Blog.

DNS 59

DNS Cybersecurity 59

Krebs on Security

FEBRUARY 8, 2020

A core part of the way these things find each other involves a Windows feature called “ DNS name devolution ,” which is 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. INSTANT CORPORATE BOTNET, ANYONE?

DNS 345

DNS Internet Internet Software 345

CyberSecurity Insiders

APRIL 12, 2023

AT&T does not adopt or endorse any of the views, positions, or information provided by the author in this article. SPF: also known as Sender Policy Framework, is a DNS record used for authentication mechanism in email addresses. SPF is a txt record configured in DNS records. What is an e-mail?

DNS 107

DNS Authentication Internet Internet 107

CSO Magazine

JUNE 14, 2021

DNS, or Domain Name System, was created to provide a better way, one in which users could type in a friendly host name rather than an IP. DNS not only met this need but has also scaled incredibly well — now supporting over 330 million domains. In considering what DNS provides, the flaws in privacy become very apparent.

DNS 59

DNS IoT Internet Internet 59

eSecurity Planet

MAY 24, 2023

This article helps to understand: How Does DKIM Work? A successful DKIM check also verifies ownership of the email by matching the organization in the “from” fields of the email with the DNS associated with the organization. At a high level, DKIM enables an organization to provide encryption hash values for key parts of an email.

Technology 101

Technology DNS Encryption Authentication 101

Malwarebytes

JUNE 30, 2022

The threat actor can then use DNS hijacking and HTTP hijacking to cause the connected devices to install other malware. According to an article in the Financial Times Chinese university students have been lured to work as translators to help identify hacking targets, and to analyze stolen material. DNS hijacking. HTTP hijacking.

DNS 96

DNS Malware Small Business Firmware 96

eSecurity Planet

JUNE 1, 2023

At a high level, implementation of the Domain-based Message Authentication, Reporting and Conformance (DMARC) standard can be done simply and easily for outgoing mail by adding a text file to an organization’s DNS record. A receiving server looks for this when scanning the DNS record for the domain that sent the message.

DNS 98

DNS Authentication Marketing eCommerce 98

Hacker's King

DECEMBER 19, 2023

In this article, we will learn about a Open-Source Intelligence based information gathering tool called " Infoooze " that can provide you list of tasks you can perform on target to automate your information gathering process. based on the target technology.

DNS 52

DNS Hacking Internet Internet 52

eSecurity Planet

JANUARY 6, 2021

This article will touch on TCP/IP stacks’ role in network security, the critical vulnerabilities identified by Forescout, and immediate steps to mitigate AMNESIA:33 attacks. Stack components impacted include DNS, IPv6, IPv4, TCP, ICMP, LLMNR, and mDNS. DNS Cache Poisoning: 2. DNS Cache Poisoning. Devices Impacted.

IoT 140

IoT DNS Internet Internet 140