PerezBox Security

MARCH 2, 2019

I was recently at an event listening to representatives of ICANN and CloudFlare speak on security with DNS and it occurred to me that very few of us really understand. The post The Evolving World of DNS Security appeared first on PerezBox.

DNS 101

DNS Architecture Technology Information Security 101

The Last Watchdog

MARCH 28, 2019

A couple of high-profile distributed denial-of-service (DDoS) attacks will surely go down in history as watershed events – each for different reasons. 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. Beyond DDoS.

DDOS 263

DDOS IoT DNS Internet 263

Krebs on Security

OCTOBER 11, 2022

The new zero-day flaw– CVE-2022-41033 — is an “elevation of privilege” bug in the Windows COM+ event service, which provides system notifications when users logon or logoff. Microsoft says the flaw is being actively exploited, and that it was reported by an anonymous individual.

DNS 330

DNS Internet Internet Cyber threats 330

Troy Hunt

JULY 19, 2018

Onto the next piece and per the title, it's going to involve DNS rollover. As such, I need to roll DNS to go from pointing to one Function app to another one. Managing DNS can be painful at the best of times if you're not super cautious, and it's extra tricky in Azure due to the way the domain validation happens.

DNS 143

DNS Passwords Firewall Authentication 143

Troy Hunt

JULY 12, 2018

I've done a heap of writing on this little device and regularly use it at conferences and training events. For example, check out how it's used when embedded in the TXT record of a DNS entry which is then loaded into a WHOIS service which doesn't properly output encode the results. DNS Hijacking.

DNS 279

DNS Wireless Risk Banking 279

Troy Hunt

MARCH 9, 2022

When that's the case, they're listed in the screen below but as this is a brand new domain that's presently doing absolutely nothing, we'll ignore that and just continue (we'll add DNS records later when the domain is bound to the Cloudflare Pages resource): Nameserver time!

Passwords 358

Passwords DNS Accountability Risk 358

Cisco Security

JUNE 13, 2022

For example, the security event might involve requests to communicate with an IP address, and the analyst would say, “This IP address belongs to my DNS server, so the traffic is legitimate.” Wait, what is the baseline, and how was it violated in this particular security event?” Annotated security events.

DNS 144

DNS Engineering Authentication Malware 144

Cisco Security

NOVEMBER 2, 2021

This provides a better way of handling failover events. adds support for geolocation and latency-based DNS redirection. Geolocation-based DNS redirection : Figure 1 shows geolocation-based load balancing. Geolocation-based DNS redirection : Figure 1 shows geolocation-based load balancing. Resources.

Firewall 136

Firewall DNS Architecture Authentication 136

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

Troy Hunt

DECEMBER 13, 2019

Melbourne where I was due to do the closing keynote of the event. That's now done, questions answered and beers drunk and I left the event feeling great. I recorded this right before heading out for my final conference talk of the year at YOW!

DNS 148

DNS 148

Security Boulevard

APRIL 18, 2024

Originating from the conference’s events situated at the Anaheim Marriott ; and via the organizations YouTube channel. Permalink The post USENIX Security ’23 – NRDelegationAttack: Complexity DDoS attack on DNS Recursive Resolvers appeared first on Security Boulevard.

DNS 64

DNS DDOS Network Security 64

Security Boulevard

APRIL 17, 2024

Originating from the conference’s events situated at the Anaheim Marriott ; and via the organizations YouTube channel. Permalink The post USENIX Security ’23 – The Maginot Line: Attacking The Boundary Of DNS Caching Protection appeared first on Security Boulevard.

DNS 64

DNS 64

Security Boulevard

APRIL 17, 2024

Originating from the conference’s events situated at the Anaheim Marriott ; and via the organizations YouTube channel. Permalink The post USENIX Security ’23 – Two Sides Of The Shield: Understanding Protective DNS Adoption Factors appeared first on Security Boulevard.

DNS 64

DNS 64

Krebs on Security

MARCH 28, 2021

I’d been doxed via DNS. Here are a few of the more notable examples , although all of those events are almost a decade old. Just my Social Security number. That same list today would be pages long.

Hacking 363

Hacking Cybercrime DNS Internet 363

Security Boulevard

APRIL 16, 2024

Originating from the conference’s events situated at the Anaheim Marriott ; and via the organizations YouTube channel. Permalink The post USENIX Security ’23 – User Awareness and Behaviors Concerning Encrypted DNS Settings in Web Browsers appeared first on Security Boulevard.

DNS 64

DNS Encryption 64

Security Boulevard

APRIL 18, 2024

Originating from the conference’s events situated at the Anaheim Marriott ; and via the organizations YouTube channel. Permalink The post USENIX Security ’23 – Fourteen Years in the Life: A Root Server’s Perspective on DNS Resolver Security appeared first on Security Boulevard.

DNS 64

DNS Network Security 64

Cisco Security

OCTOBER 28, 2021

Within Cisco Umbrella, we can look at the different events that it logs while monitoring DNS traffic. The Activity Search page shows information such as Identity (from Active Directory configuration), DNS Type, Internal IP, External IP, and the action that Umbrella took on each event.

Ransomware 145

Ransomware DNS Marketing Engineering 145

Security Boulevard

MARCH 20, 2024

Originating from the conference’s events situated at the Anaheim Marriott ; and via the organizations YouTube channel. Permalink The post USENIX Security ’23 – Rasmus Dahlberg, Tobias Pulls – Timeless Timing Attacks And Preload Defenses In Tor’s DNS Cache appeared first on Security Boulevard.

DNS 64

DNS 64

Cisco Security

AUGUST 12, 2021

Like other Black Hat conferences, the mission of the NOC is to build a conference network that is secure, stable and accessible for the training events, briefings, sponsors and attendees. Threat hunting is a core mission of the Cisco Secure team, while monitoring the DNS activity for potentially malicious activity. app.nihaocloud[.]com.

DNS 145

DNS Firewall Malware Mobile 145

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 94

DNS Encryption Firewall Network Security 94

CyberSecurity Insiders

MARCH 13, 2021

This activity was shortly followed by escalating activity involving brute force activity, remote code execution attempts, and exfiltration channel probing attempts all exploiting vulnerable DNS services on the domain controllers. The post Stories from the SOC – DNS recon + exfiltration appeared first on Cybersecurity Insiders.

DNS 54

DNS Threat Detection Cybersecurity Cyber threats 54

eSecurity Planet

JANUARY 6, 2021

Stack components impacted include DNS, IPv6, IPv4, TCP, ICMP, LLMNR, and mDNS. Forescout found DNS to be the most vulnerable due to its complexity, with TCP and IPv4 and IPv6 sub-stacks not far behind. DNS Cache Poisoning: 2. DNS Cache Poisoning. Also Read: How to Prevent DNS Attacks. Rely on internal DNS servers.

IoT 141

IoT DNS Internet Internet 141

Security Boulevard

MARCH 18, 2025

This includes: Passive DNS Data : Historical records of DNS queries, enabling investigators to trace domains used in past attacks. Infrastructure Intelligence fingerprints past DNS resolutions and connects that domain to command-and-control servers, associated IP addresses, and related malware samples.

DNS 59

DNS Cyber threats Malware Internet 59

Security Boulevard

AUGUST 12, 2021

The post DEF CON 29 Main Stage – Shir Tamari’s & Ami Luttwak’s ‘New Class Of DNS Vulns Affecting DNS-As-Service Platforms’ appeared first on Security Boulevard. Our thanks to DEFCON for publishing their outstanding DEFCON Conference Main Stage Videos on the groups' YouTube channel.

DNS 59

DNS Education InfoSec 59

eSecurity Planet

SEPTEMBER 3, 2022

A denial-of-service (DoS) event or attack can occur between a small number of devices such as a pair of servers. These events can occur accidentally and even within a corporate network; however, intentional attacks on internet-facing resources are far more common. Also read: How to Secure DNS. Motivations for DDoS Attacks.

DDOS 145

DDOS DNS Firewall Internet 145

Cisco Security

NOVEMBER 29, 2021

Cisco Secure supports the NOC operations with DNS visibility and architecture intelligence ( Cisco Umbrella and Cisco Umbrella Investigate ) and automated malware analysis and threat intelligence ( Cisco Secure Malware Analytics (Threat Grid) , backed by Cisco Talos Intelligence and Cisco SecureX ). The other half is Clarity for iOS.

DNS 145

DNS Malware Mobile Firewall 145

eSecurity Planet

JUNE 8, 2022

We had the InsightIDR core services and endpoint monitoring set up in our lab in just a few hours, and started receiving notifications about security events immediately. Configuring InsightIDR event sources. Configuring InsightIDR event sources. Also read: Testing & Evaluating SIEM Systems: A Review of Rapid7 InsightIDR.

DNS 111

DNS Data collection Marketing Passwords 111

Webroot

MARCH 29, 2021

An endpoint DNS solution could have stopped the Trojanized Orion version by refusing to resolve the domain names of the command-and-control servers, again disrupting the infection to the point that no real damage could be done. But recent events have worked to undermine this growing understanding. The “next one” will look different.

Hacking 137

Hacking DNS Firewall Malware 137

CyberSecurity Insiders

FEBRUARY 16, 2023

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. Thus, blocking DNS systems from receiving external queries must become a priority and done technically.

Backups 116

Backups Ransomware DNS Encryption 116

Schneier on Security

FEBRUARY 14, 2020

Each step is checked by everyone else, and the event is livestreamed. The module is activated, allowing the KSK private key to sign keys, using smart cards assigned to the ceremony participants. These credentials are stored in deposit boxes and tamper-proof bags in the second safe.

Internet 279

Internet Internet Engineering DNS 279

eSecurity Planet

SEPTEMBER 24, 2021

While InsightIDR functions as a security information and event management (SIEM) solution, its functionality goes far beyond traditional SIEM products and extends to the budding XDR space. From the InsightIDR home dashboard, administrators can see metrics like users, events processed, notable behaviors, new alerts, honeypots, and more.

DNS 131

DNS Technology Cybersecurity Data collection 131

Cisco Security

DECEMBER 22, 2022

Integrating Meraki Scanning Data with Umbrella Security Events, by Christian Clasen. Cisco Umbrella : DNS visibility and security. Being part of the Black Hat NOC was an incredible experience, I was able to meet fantastic professionals, fully committed on making the event a success for all attendees and exhibitors.

DNS 102

DNS Malware Accountability Wireless 102

Security Affairs

FEBRUARY 9, 2021

Another interesting issue addressed by Microsoft with Microsoft February 2021 Patch Tuesday security updates is a Windows DNS Server Remote Code Execution vulnerability tracked as CVE-2021-24078. “This patch fixes a bug in the Windows DNS Server that could allow remote code execution on affected systems.

DNS 100

DNS IoT Backups Mobile 100

SecureList

OCTOBER 18, 2021

As in the older DanBot instances, both variants supported similar custom C&C protocols tunneled over DNS or HTTP. Our investigation into Lyceum has shown that the group has evolved its arsenal over the years and shifted its usage from the previously documented.NET malware to new versions, written in C++.

DNS 133

DNS Telecommunications Malware Accountability 133

SecureList

JULY 28, 2021

It is linked to a vulnerability in DNS resolvers that allows amplification attacks on authoritative DNS servers. Attacks on DNS servers are dangerous because all the resources they serve become unavailable, regardless of their size and level of DDoS protection. The bug was named TsuNAME.

DDOS 145

DDOS DNS IoT Marketing 145

Cisco Security

DECEMBER 1, 2021

Within Cisco Umbrella, we can look at the different events that it logs while monitoring DNS traffic. For example, the Activity Search page shows information such as Identity (from Active Directory configuration), DNS Type, Internal IP, External IP, and Umbrella’s action on each event.

Ransomware 98

Ransomware DNS Marketing Engineering 98

Cisco Security

AUGUST 29, 2022

25+ Years of Black Hat (and some DNS stats), by Alejo Calaoagan. Cisco is a Premium Partner of the Black Hat NOC , and is the Official Wired & Wireless Network Equipment, Mobile Device Management, DNS (Domain Name Service) and Malware Analysis Provider of Black Hat. Continued Integrations from past Black Hat events.

DNS 103

DNS Wireless Malware Firewall 103