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.

Encryption 85

Encryption DNS Threat Detection Internet 85

Fox IT

AUGUST 11, 2022

This Saitama implant uses DNS as its sole Command and Control channel and utilizes long sleep times and (sub)domain randomization to evade detection. In May 2022, security firm Malwarebytes published a two 1 -part 2 blog about a malware sample that utilizes DNS as its sole channel for C2 communication. Introduction.

DNS 66

DNS Engineering Malware Encryption 66

The Last Watchdog

JUNE 1, 2021

The Pharming attacks are carried out by modifying the settings on the victim’s system or compromising the DNS server. Manipulating the Domain Name Service (DNS) protocol and rerouting the victim from its intended web address to the fake web address can be done in the following two ways: •Changing the Local Host file.

DNS 215

DNS Phishing Social Engineering Cyber Attacks 215

Cisco Security

SEPTEMBER 24, 2021

Earlier this year in a blog post , I shared a bit about our Auth-DoH idea. It’s a forward-looking idea to improve DNS security. DDR allows for upgrading from insecure DNS to secure DNS. DDR allows for upgrading from insecure DNS to secure DNS. In case it’s not top of mind, let me help refresh your memory.

DNS 108

DNS Encryption Advertising Technology 108

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 237

DNS Ransomware Accountability Internet 237

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 69

DNS Encryption Firewall Network Security 69

Malwarebytes

DECEMBER 1, 2023

For a “normal” connection to a website, a Domian Name System (DNS) finds the IP address for the requested domain name. As I explained in the blog DNS hijacks: what to look for , DNS is the phonebook of the internet to the effect that the input is a name and the output is a number.

DNS 90

DNS Internet Internet Encryption 90

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.

Ransomware 134

Ransomware DNS Encryption Backups 134

Schneier on Security

MAY 1, 2018

From their blog post : Finding #3: Many IoT Devices Contact a Large and Diverse Set of Third Parties In many cases, consumers expect that their devices contact manufacturers' servers, but communication with other third-party destinations may not be a behavior that consumers expect. Amcrest WiFi Security Camera. No surprises there.

IoT 158

IoT Manufacturing Encryption DNS 158

Krebs on Security

APRIL 4, 2024

Launched in 2008, privnote.com employs technology that encrypts each message so that even Privnote itself cannot read its contents. For example, this account at Medium has authored more than a dozen blog posts in the past year singing the praises of Tornote as a secure, self-destructing messaging service.

Phishing 213

Phishing Cryptocurrency DDOS Internet 213

Security Affairs

JUNE 12, 2022

sections “The Underdogs – Best Personal (non-commercial) Security Blog” and “The Tech Whizz – Best Technical Blog”). Please vote for Security Affairs and Pierluigi Paganini in every category that includes them (e.g. To nominate, please visit:?. Follow me on Twitter: @securityaffairs and Facebook. Pierluigi Paganini.

Ransomware 125

Ransomware DNS Cybercrime Hacking 125

Webroot

SEPTEMBER 7, 2023

How to protect your data A sophisticated, layered security strategy will already have prevention tools like endpoint and DNS protection in place as well as security awareness training to stop threats before they reach your network. If a cyber criminal gets access to emails, they won’t be able to access that sensitive data if it’s encrypted.

Encryption 88

Encryption Cyber Insurance Cybercrime Phishing 88

NetSpi Technical

OCTOBER 19, 2023

Let’s try DNS. To quickly test if we have DNS outbound, we can use Burp Suite Collaborator. This will give us a unique address that we can query and let us know if a DNS request was received. import socket data = socket.gethostbyname_ex(‘<collaborator URL>’) print(repr(data)) We have DNS outbound.

DNS 97

DNS Internet Internet Phishing 97

CyberSecurity Insiders

JANUARY 6, 2022

This blog was written by an independent guest blogger. Secure Sockets Layer (SSL) is a standard security protocol that encrypts the connection between a web browser and a server. This only takes a few clicks, because an SSL certificate is a text file with encrypted data. HTTPS and DNS), data link (e.g.,

Encryption 134

Encryption Identity Theft Authentication Data breaches 134

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 99

DNS IoT Backups Mobile 99

Security Affairs

MAY 15, 2023

Merdoor is a fully-featured backdoor that supports multiple capabilities, including installing itself as a service, keylogging, a variety of methods to communicate with its command-and-control (C&C) server (HTTP, HTTPS, DNS, UDP, TCP), and the ability to listen on a local port for commands.

Encryption 92

Encryption DNS Phishing Malware 92

Security Affairs

JUNE 20, 2022

sections “The Underdogs – Best Personal (non-commercial) Security Blog” and “The Tech Whizz – Best Technical Blog”). Security Affairs is one of the finalists for the best European Cybersecurity Blogger Awards 2022 – VOTE FOR YOUR WINNERS. Please vote for Security Affairs and Pierluigi Paganini in every category that includes them (e.g.

Spyware 78

Spyware DNS Surveillance Ransomware 78

Security Boulevard

JANUARY 17, 2024

This blog post describes methods that SpecterOps consultants have researched to successfully circumvent this technology during offensive assessments. This can be due to encryption or even size. Encoding using a technique with low entropy often has the products scan the delivered files since they are not fully encrypted.

DNS 62

DNS Penetration Testing Passwords Encryption 62

Troy Hunt

JULY 12, 2018

The rapid adoption has been driven by a combination of ever more visible browser warnings (it was Chrome and Firefox's changes which prompted the aforementioned tipping point post), more easily accessible certificates via both Let's Encrypt and Cloudflare and a growing awareness of the risks that unencrypted traffic presents. DNS Hijacking.

DNS 276

DNS Wireless Risk Banking 276

Malwarebytes

JUNE 5, 2022

” But for all the valid discussion about online anonymity, encryption, and privacy, Tor has an entirely different value proposition for people who build and maintain websites, and that is one of security. “There are so many security risks up the stack,” Muffett said.

Internet 101

Internet Internet DNS Surveillance 101

Security Affairs

JUNE 9, 2022

Other techniques employed by the APT group include DLL hijacking, Themida-packed files, and DNS tunneling to evade post-compromise detection. sections “The Underdogs – Best Personal (non-commercial) Security Blog” and “The Tech Whizz – Best Technical Blog”) To nominate, please visit:? Pierluigi Paganini.

Malware 93

Malware DNS Encryption Education 93

SiteLock

AUGUST 27, 2021

Cybercriminals are constantly crawling the web for targets, and they’ll often go after websites you might not expect, such as a vegan cooking blog. An SSL Certificate is used to establish a secure encrypted connection between a web browser and a web server. Joe’s Vegan Blog Cooks Up Comment Spam.

Hacking 98

Hacking DDOS eCommerce Firewall 98

Security Affairs

APRIL 12, 2019

this blog) will follow as soon as possible. Unfortunately, users that have no backups of their encryption keys will be not able to read their previous conversations. “The rebuilt infrastructure itself is secure, however, and the DNS issue has been solved without further abuse.

Hacking 87

Hacking DNS Passwords Data breaches 87

eSecurity Planet

MARCH 14, 2022

The Cobalt Strike’s Command and Control protocol is a DNS-based communication that is pretty hard to detect compared to classic HTTP traffic. It’s a pretty clever way to hide malicious instructions using DNS entries and some obfuscation algorithm the Beacon can decode. Detecting Cobalt Strike Attacks.

Energy and Utilities 131

Energy and Utilities DNS Penetration Testing Ransomware 131

Malwarebytes

JUNE 15, 2022

Symbiote’s evasion techniques (Source: Blackberry Threat Vector Blog ). The credentials are first encrypted with RC4 using an embedded key, and then written to a file. The data is hex encoded and chunked up to be exfiltrated via DNS address record requests to a domain name controlled by the threat actor.”

Malware 65

Malware DNS Banking Engineering 65

Security Boulevard

MAY 17, 2023

Most of these steps could’ve been blocked with the aid of DNS protection. The process involves encryption and decryption prior to verifying transactions. There are still many opportunities to thwart an attack at the DNS level. During the decryption, the malware reads and saves card information to a winxml.dll file.

Data breaches 52

Data breaches DNS Malware Phishing 52

Security Affairs

MARCH 4, 2019

” reads a blog post published by the firm. ” continues the blog post. Instead, the real IP address of the C2 is obfuscated with what is essentially an encryption algorithm. Experts pointed out that DGA is a double-edged sword because allows security researchers to analyze DNS and network traffic to enumerate bots.

DNS 83

DNS Banking Advertising Ransomware 83

Security Boulevard

MARCH 3, 2023

Webinar: Emulating Threat Actors in OT Networks - DNS Tunneling Mar 23 @ 10:00 AM (PST) While it is possible to write signatures for malware of this type after analysis is completed, it takes time — time during which the malware is able to evade even the most advanced EDRs while it goes about its business. Next-gen protective DNS.

Phishing 57

Phishing DNS Malware Antivirus 57

Duo's Security Blog

JULY 8, 2021

Next, it would encrypt files on the victim’s system and deny access until they sent a $189 payment to a post office box in Panama. For example, a hospital in Düsseldorf, Germany became infected with ransomware that managed to encrypt its systems. Bait CDs were then distributed at the World Health Organization’s AIDS conference.

Ransomware 91

Ransomware DNS Encryption Healthcare 91

Security Affairs

APRIL 1, 2019

2014), as described on the MMD blog when MMD detected 5 variants active under almost 15 panels scattered in China network. On the MMD blog. Figure 1: The ARM version of Elknot malware on MMD blog. The growth was very rapid at that time (Sept. We could say here to have a ““Mirai” idea “ante-litteram” 2 years before.

DDOS 91

DDOS Malware Encryption Penetration Testing 91

Troy Hunt

NOVEMBER 25, 2020

When Patching Goes Wrong Now that I've finished talking about how patching should be autonomous, let's talk about the problems with that starting with an issue I raised in this tweet from yesterday: In the first of my IoT blog series yesterday, I lamented how one of my smart plugs was unexplainably inaccessible. HA has a Let's Encrypt add-on.

IoT 358

IoT Firmware Risk Manufacturing 358

Security Boulevard

JUNE 28, 2023

Now, ransomware attacks often include data exfiltration, which victimizes targeted organizations twice: Hackers might demand money to de-encrypt a company’s data and threaten to sell that data on the dark web. And they may keep the data once the ransom is paid regardless. If that sounds like the plot of a Tom Clancy novel, think again.

Cybersecurity 57

Cybersecurity DNS Ransomware Malware 57

Pen Test Partners

SEPTEMBER 13, 2023

Section 3 Sensitive authentication data must now be encrypted or protected if stored before authorization. Disk level encryption is no longer permitted for protection unless it is a form of removeable media (e.g., IDS/IPS solutions must detect and alert on any covert malware communications being used such as DNS tunnelling.

Authentication 52

Authentication Passwords Media Encryption 52

Security Affairs

JULY 11, 2022

Operators can easily make this configuration through an interface that uses the CloudFlare API for configuring new DNS zones. As observed, criminals are using the Let’s Encrypt CA to create valid HTTPs certificates. The ANUBIS network phishing campaigns are masked through the Cloudflare CDN. The Phishing template. Pierluigi Paganini.

Phishing 100

Phishing Social Engineering Banking Engineering 100

McAfee

DECEMBER 22, 2021

In this blog, we present an overview of how you can mitigate the risk of this vulnerability exploitation with McAfee Enterprise solutions. As we are writing this blog, on MVISION Insights there are 1,813 IOCs including MD5, SHA256, URL, IP, DOMAIN, HOSTNAME. MCFE Log4Shell Vulnerability Blog: [link].

Malware 98

Malware Risk Internet Internet 98

CyberSecurity Insiders

APRIL 6, 2023

This is the first of a series of consultant-written blogs around PCI DSS. GoDaddy, Network Solutions) DNS service (E.g., GoDaddy, Network Solutions) DNS service (E.g., Many organizations have multiple IAM schemes that they forget about when it comes to a robust compliance framework such as PCI DSS. PCI DSS v4.0

Accountability 57

Accountability DNS DDOS VPN 57

Daniel Miessler

SEPTEMBER 27, 2020

VPNs encrypt the traffic between you and some endpoint on the internet, which is where your VPN is based. If your VPN includes all DNS requests and traffic then you could be hiding significantly from your ISP. How bad is it to be a public figure (blog/YouTube) in 2020? This is true. The Government. So, probably not a win.

VPN 326

VPN Risk Hacking Encryption 326