article thumbnail

MasterCard DNS Error Went Unnoticed for Years

Krebs on Security

A DNS lookup on the domain az.mastercard.com on Jan. From June 30, 2020 until January 14, 2025, one of the core Internet servers that MasterCard uses to direct traffic for portions of the mastercard.com network was misnamed. 14, 2025 shows the mistyped domain name a22-65.akam.ne.

DNS 361
article thumbnail

Morphing Meerkat phishing kits exploit DNS MX records

Security Affairs

Morphing Meerkat phishing kits exploit DNS MX records to deliver spoofed login pages, targeting over 100 brands. Threat actors are exploiting DNS techniques to enhance phishing attacks, using MX records to dynamically serve spoofed login pages. “We discovered cyber campaigns that used the phishing kits as early as January 2020.

DNS 84
Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

Patch Tuesday, Good Riddance 2020 Edition

Krebs on Security

Microsoft today issued its final batch of security updates for Windows PCs in 2020, ending the year with a relatively light patch load. Additionally, Microsoft released an advisory on how to minimize the risk from a DNS spoofing weakness in Windows Server 2008 through 2019.

DNS 334
article thumbnail

‘Wormable’ Flaw Leads July Microsoft Patches

Krebs on Security

Top of the heap this month in terms of outright scariness is CVE-2020-1350 , which concerns a remotely exploitable bug in more or less all versions of Windows Server that attackers could use to install malicious software simply by sending a specially crafted DNS request.

DNS 328
article thumbnail

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. As in part one, we’ll be looking at data covering the calendar year of 2020. This time we’ll be comparing yearly totals of DNS traffic to malicious sites, by industry.

DNS 143
article thumbnail

DHS CISA urges government agencies to fix SIGRed Windows Server DNS bug within 24h

Security Affairs

US DHS CISA urges government agencies to patch SIGRed Windows Server DNS vulnerability within 24h due to the likelihood of the issue being exploited. Microsoft’s Patch Tuesday addressed a 17-year-old wormable vulnerability for hijacking Microsoft Windows Server tracked CVE-2020-1350 and dubbed SigRed. ” states Krebs.

DNS 139
article thumbnail

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. Overview of analysis. Cryptomining.

DNS 144