eSecurity Planet

DECEMBER 8, 2023

Domain name service (DNS) attacks threaten every internet connection because they can deny, intercept, and hijack connections. With the internet playing an increasing role in business, securing DNS plays a critical role in both operations and security. TLS and HTTPS inherently create secured and encrypted sessions for communication.

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DNS DDOS Firewall Architecture 113

Malwarebytes

JULY 12, 2021

Firefox recently announced that it will be rolling out DNS-over-HTTPS (or DoH) soon to one percent of its Canadian users as part of its partnership with CIRA (the Canadian Internet Registration Authority), the Ontario-based organization responsible for managing the.ca The DNS resolver the request is sent to also sees the DNS request, too.

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DNS Encryption Internet Internet 124

Security Affairs

SEPTEMBER 19, 2020

The popular encrypted email service Tutanota was hit with a series of DDoS attacks this week targeting its website fist and its DNS providers later. Encrypted email service, Tutanota suffered a series of DDoS attacks that initially targeted the website and later its DNS providers. ” continues the post.

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DDOS Encryption DNS Advertising 145

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 277

DNS Ransomware Accountability Internet 277

eSecurity Planet

NOVEMBER 10, 2023

DNS security protects the domain name system (DNS) from attackers seeking to reroute traffic to malicious sites. Since a majority of business IT traffic now accesses or passes through the internet, DNS plays an increasingly important — and vulnerable — role. in the DNS cache for more efficient delivery of information to users.

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DNS DDOS Encryption Authentication 109

Security Affairs

FEBRUARY 12, 2024

ExpressVPN addressed a bug in the split tunneling feature that exposed the domains visited by the users to configured DNS servers. The expert noticed that the DNS queries were sent to the DNS server configured on the computer. No other VPN protections, such as encryption, were affected.” ” reads the advisory.

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DNS VPN Encryption Internet 138

Security Boulevard

JUNE 19, 2024

DNS enables the easy navigation from website to website as you currently know it. Many DNS resolvers - such as your internet service provider's (ISP) - do not encrypt queries and may log data and metadata surrounding your queries. This post aims to explore how and why - and doesn't leave out the limitations of encrypted DNS.

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DNS Encryption Firmware Surveillance 69

Security Affairs

NOVEMBER 26, 2019

Researchers at SEC Consult Vulnerability Lab discovered multiple issues in several security products from Fortinet, including hardcoded key and encryption for communications. “ Fortinet products, including FortiGate and Forticlient regularly send information to Fortinet servers (DNS: guard.fortinet.com) on.

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Encryption Antivirus DNS Advertising 142

Security Affairs

MAY 24, 2024

The use of Dynamic DNS (DDNS) services embedded in appliances can potentially expose data and devices to attacks. The use of Dynamic DNS (DDNS) services embedded in appliances, such as those provided by vendors like Fortinet or QNAP, carries cybersecurity implications. It increases the discoverability of customer devices by attackers.

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DNS Manufacturing Firewall Internet 138

The Last Watchdog

JUNE 1, 2021

Primarily the Pharming attack is planned to gain sensitive data like login credentials, personally identifiable information (PII), social security numbers, bank details, and more. The Pharming attacks are carried out by modifying the settings on the victim’s system or compromising the DNS server. DNS Poisoning.

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DNS Phishing Social Engineering Cyber Attacks 214

Malwarebytes

JUNE 1, 2022

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. But which web-based cyberthreats in particular does DNS filtering stop, you ask?

DNS 102

DNS DDOS Phishing Spyware 102

Security Affairs

MARCH 4, 2020

Let’s Encrypt is going to revoke over 3 million certificates today due to a flaw in the software used to verify users and their domains before issuing a certificate. A bug in Let’s Encrypt’s certificate authority (CA) software, dubbed Boulder, caused the correct validation for some certificates.

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Encryption Advertising DNS Software 144

Security Boulevard

MAY 20, 2022

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. What Is DNS Spoofing? .

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DNS Cyber Attacks Encryption Risk 98

CyberSecurity Insiders

JANUARY 6, 2022

Secure Sockets Layer (SSL) is a standard security protocol that encrypts the connection between a web browser and a server. This is especially beneficial for financial transactions as all the data, including credit card information, remains private. HTTPS and DNS), data link (e.g., Use data encryption.

Encryption 134

Encryption Identity Theft Authentication Data breaches 134

Cisco Security

MARCH 16, 2021

In fact, 63% of threats detected by Cisco Stealthwatch in 2019 were in encrypted traffic. The European Union is concerned enough that it drafted a resolution in November 2020 to ban end-to-end encryption, prompting outcry from privacy advocates. Keeping your destination private: DNS over HTTPS.

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Encryption DNS Threat Detection Internet 95

Schneier on Security

MAY 1, 2018

QuickDDNS is a Dynamic DNS service provider operated by Dahua. Amcrest customer service informed us that Dahua was the original equipment manufacturer. Their first two findings are that "Many IoT devices lack basic encryption and authentication" and that "User behavior can be inferred from encrypted IoT device traffic."

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IoT Manufacturing Encryption DNS 196

Security Affairs

FEBRUARY 12, 2024

Public Wi-Fi users are prime targets for MITM attacks because the information they send is often not encrypted, meaning it’s easy for hackers to access your data. Look for the “https” in the website’s URL—it means there’s some level of encryption.

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DNS VPN Encryption Passwords 144

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. Correctly managing encrypted DNS can be very challenging.

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DNS Encryption Firewall Network Security 108

Security Affairs

MARCH 3, 2024

The Bifrost RAT has been active since 2004, it allows its operators to gather sensitive information, including hostname and IP address. ” The sample binary analyzed by the experts is compiled for x86, the authors removed debugging information and symbol tables to hinder analysis. com by using the public DNS resolver at 168.95[.]1.1.

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DNS Malware Encryption Hacking 141

Security Affairs

OCTOBER 11, 2021

A wildcard certificate allows administrators to use a single wildcard certificate to protect each of subdomains, anyway, researchers warn that the use of wildcard TLS certificates could be exploited by attackers to decrypt TLS-encrypted traffic. ” reads the Cybersecurity Information Sheet released by NSA. Pierluigi Paganini.

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DNS Encryption Risk Firewall 142

Security Affairs

DECEMBER 27, 2024

The malware’s configuration, including its C2 server domain and a unique string, is encrypted using the ChaCha20 algorithm. The malware FICORA is a variant of the Mirai malware, it includes DDoS attack capabilities using multiple protocols such as UDP, TCP, and DNS. Then it connects to its C2 server (“192.110.247[.]46”),

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Architecture Malware DNS DDOS 71

Krebs on Security

AUGUST 23, 2024

A core part of the way these things find each other involves a Windows feature called “ DNS name devolution ,” 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. He then learned the.ad

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DNS Internet Internet Authentication 329

Security Affairs

JANUARY 19, 2025

Stealthy Credit Card Skimmer Targets WordPress Checkout Pages via Database Injection Ransomware on ESXi: The mechanization of virtualized attacks FunkSec Alleged Top Ransomware Group Powered by AI Abusing AWS Native Services: Ransomware Encrypting S3 Buckets with SSE-C Malicious PyPI Package pycord-self Targets Discord Developers with Token Theft (..)

Malware 66

Malware Artificial Intelligence DNS Ransomware 66

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.

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DNS Malware Social Engineering Software 69

Security Affairs

JULY 5, 2024

The DDoS botnet Zergeca supports six attack methods and implements additional functionalities such as proxying, scanning, self-upgrading, persistence, file transfer, reverse shell, and collecting sensitive device information. 54.51.82, has been associated with at least two Mirai botnets since September 2023. ” concludes.

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DDOS DNS Encryption Malware 139

Security Affairs

APRIL 24, 2024

Below the infection chain described by Avast: The eScan updater triggers the update The downloaded package file is replaced with a malicious one on the wire because of a missing HTTPS encryption (MitM is performed) A malicious package updll62.dlz GuptiMiner connects directly to malicious DNS servers, bypassing the DNS network entirely.

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Antivirus Malware DNS Cryptocurrency 133

SecureList

DECEMBER 18, 2020

In the initial phases, the Sunburst malware talks to the C&C server by sending encoded DNS requests. These requests contain information about the infected computer; if the attackers deem it interesting enough, the DNS response includes a CNAME record pointing to a second level C&C server. avsvmcloud[.]com”

DNS 76

DNS Telecommunications Malware Encryption 76

Security Boulevard

APRIL 8, 2025

Encryption Technologies: Encryption protects data confidentiality and integrity, but attackers also use it to conceal malware, establish encrypted communication channels, and secure stolen data. Attackers use phishing, pretexting, and baiting to gain access or information.

Cybersecurity 52

Cybersecurity Penetration Testing DNS Encryption 52

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. Encrypting files.

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Ransomware DNS Encryption Backups 145

Security Affairs

JANUARY 19, 2025

CISA adds Aviatrix Controllers vulnerability to its Known Exploited Vulnerabilities catalog ESET detailed a flaw that could allow a bypass of the Secure Boot in UEFI systems Russia-linked APT Star Blizzard targets WhatsApp accounts Prominent US law firm Wolf Haldenstein disclosed a data breach Clop Ransomware exploits Cleo File Transfer flaw: dozens (..)

Spyware 71

Spyware Data breaches DNS Artificial Intelligence 71

Security Affairs

APRIL 7, 2024

The flaw affects multiple D-Link NAS devices, including models DNS-340L, DNS-320L, DNS-327L, and DNS-325. An attacker can exploit the flaw to achieve command execution on the affected D-Link NAS devices, gain access to potential access to sensitive information, system configuration alteration, or denial of service.

Internet 110

Internet Internet DNS Hacking 110

Security Affairs

FEBRUARY 23, 2019

A user reported that its D-Link DNS-320 device was infected by malicious code. The D-Link DNS-320 model is no more available for sale, one of the members of the forum explained that the firmware of its NAS was never updated and its device was exposed to WAN through ports 8080, FTP port 21, and a range of ports for port forwarding.

Ransomware 111

Ransomware DNS Firmware Encryption 111

Penetration Testing

JUNE 15, 2025

CVE-2025-45987: DNS Fields Used as Command Proxies – This vulnerability affects the DNS configuration function sub_44E628. CVE-2025-45986: MAC Filtering Turned Malware Gateway – The sub_45BD1C function and bs_SetMacBlack in the shared library suffer from the same oversight.

Firmware 64

Firmware DNS Penetration Testing Advertising 64

Security Affairs

SEPTEMBER 22, 2021

The daemon connects to Circle and Netgear to obtain version information and updates to the circled daemon and its filtering database. “This daemon connects to Circle and Netgear to obtain version information and updates to the circled daemon and its filtering database. .” ” concludes the report.

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DNS Firmware VPN Risk 142

eSecurity Planet

MAY 24, 2023

At a high level, DKIM enables an organization to provide encryption hash values for key parts of an email. Using public-private encryption key pairs, receiving email servers can compare the received email hash value against the received hash value to validate if any alterations took place in transit.

Technology 102

Technology DNS Encryption Authentication 102

SecureList

DECEMBER 20, 2024

One important aspect of the BellaCiao samples is how they exhibit a wealth of information through their respective PDB paths, including a versioning scheme we were able to work out once we analyzed historical records. Generate a domain using the pattern below and send a DNS request to obtain the IP address.

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Malware DNS Encryption Passwords 129

SecureList

MARCH 10, 2021

After the user starts the program, it changes the DNS settings on the device so that all domains are resolved through the attackers’ servers, which, in turn, prevent users from accessing certain antivirus sites, such as Malwarebytes.com. Updater.exe code snippet containing the encrypted address. transmissionbt[.]org.

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DNS Antivirus Malware Encryption 145