Oblivious DNS-over-HTTPS

Schneier on Security

This new protocol , called Oblivious DNS-over-HTTPS (ODoH), hides the websites you visit from your ISP. Because the DNS query is encrypted, the proxy can’t see what’s inside, but acts as a shield to prevent the DNS resolver from seeing who sent the query to begin with.

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How to Secure DNS

eSecurity Planet

The domain name system (DNS) is basically a directory of addresses for the internet. Your browser uses DNS to find the IP for a specific service. Attackers will likely enumerate DNS to try common attacks. Also read: How to Prevent DNS Attacks. DNS: Five Critical Concepts.

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Firefox Enables DNS over HTTPS

Schneier on Security

This is good news : Whenever you visit a website -- even if it's HTTPS enabled -- the DNS query that converts the web address into an IP address that computers can read is usually unencrypted. browsers childpornography dns firefox https mozilla securityengineering terrorism

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DNS over HTTPS, DNS over TLS explained: Encrypting DNS traffic

CSO Magazine

Being the backbone of the internet, the Domain Name System (DNS) protocol has undergone a series of improvements and enhancements over the past few years.

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DNS-over-HTTP/3 in Android

Google Security

Posted by Matthew Maurer and Mike Yu, Android team To help keep Android users’ DNS queries private, Android supports encrypted DNS. In addition to existing support for DNS-over-TLS, Android now supports DNS-over-HTTP/3 which has a number of improvements over DNS-over-TLS.

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VIPRE Endpoint Security and Encrypted DNS


Most of you have probably heard about encrypted DNS (DNS-over-HTTPS or DoH, and DNS-over-TLS or DoT) and have noticed that several of the major browser vendors have rolled out support for these newer protocols. ” And we would agree: encrypted DNS does provide a convenient way for computer users to mask the names and IP addresses of the hosts they are looking up, and can also help prevent tampering with those mappings in transit.

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3 ways DNS filtering can save SMBs from cyberattacks


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.

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How DNS filtering can help protect your business from Cybersecurity threats

CyberSecurity Insiders

The Domain Name System (DNS) is an important tool that connects devices and services together across the Internet. Managing your DNS is essential to your IT cybersecurity infrastructure. When poorly managed, DNS can become a huge landscape for attackers. How does DNS work?

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What Is DNS Spoofing and How Is It Prevented?

Security Boulevard

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.

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B1txor20 Linux botnet use DNS Tunnel and Log4J exploit

Security Affairs

Researchers uncovered a new Linux botnet, tracked as B1txor20, that exploits the Log4J vulnerability and DNS tunnel. The name B1txor20 is based on the file name “b1t” used for the propagation and the XOR encryption algorithm, and the RC4 algorithm key length of 20 bytes.

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DNS-over-HTTPS takes another small step towards global domination


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

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A Deep Dive on the Recent Widespread DNS Hijacking Attacks

Krebs on Security

” The DNS part of that moniker refers to the global “ D omain N ame S ystem ,” which serves as a kind of phone book for the Internet by translating human-friendly Web site names (example.com) into numeric Internet address that are easier for computers to manage. Talos reported that these DNS hijacks also paved the way for the attackers to obtain SSL encryption certificates for the targeted domains (e.g. PASSIVE DNS. The U.S.

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Windows 11 includes the DNS-over-HTTPS privacy feature - How to use

Bleeping Computer

Microsoft has added a privacy feature to Windows 11 called DNS-over-HTTPS, allowing users to perform encrypted DNS lookups to bypass censorship and Internet activity. [.].

DNS 107

Detecting DNS implants: Old kitten, new tricks – A Saitama Case Study 

Fox IT

This Saitama implant uses DNS as its sole Command and Control channel and utilizes long sleep times and (sub)domain randomization to evade detection. These features make the traffic difficult to detect even though the implant does not use DNS-over-HTTPS (DoH) to encrypt its DNS queries.

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New "B1txor20" Linux Botnet Uses DNS Tunnel and Exploits Log4J Flaw

The Hacker News

Qihoo 360's Netlab security team called it B1txor20 "based on its propagation using the file name 'b1t,' the XOR encryption algorithm, and the RC4 algorithm key length of 20 bytes

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5 pro-freedom technologies that could change the Internet


DNS encryption. DNS encryption plugs a gap that makes it easy to track the websites you visit. The domain name system (DNS) is a distributed address book that lists domain names and their corresponding IP addresses. Homomorphic encryption.

Alleged Iran-linked APT groups behind global DNS Hijacking campaign

Security Affairs

Security expert uncovered a DNS hijacking campaign targeting organizations in various industries worldwide and suspects Iranian APT groups. Security experts at FireEye uncovered a DNS hijacking campaign that is targeting government agencies, ISPs and other telecommunications providers, Internet infrastructure entities, and sensitive commercial organizations in the Middle East, North Africa, North America and Europe. SecurityAffairs – Iran, DNS hijacking).

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An Intro to Intra, the Android App for DNS Encryption

Dark Reading

Alphabet's Jigsaw has released Intra, a free security app that aims to prevent government censorship

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German encrypted email service Tutanota suffers DDoS attacks

Security Affairs

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.

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Future Focused: Encryption and Visibility Can Co-Exist

Cisco Security

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. What’s All the Fuss About DNS Over HTTPS?

Oblivious DNS

Schneier on Security

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. To prevent an eavesdropper from learning information, the DNS query must be encrypted; the client generates a request for www.foo.com, generates a session key k, encrypts the requested domain, and appends the TLD domain.odns, resulting in {www.foo.com}k.odns.

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Intra Gives Older Versions of Android Important DNS Protections

WIRED Threat Level

Alphabet subsidiary Jigsaw is using a new app to give DNS encryption protections to any Android smartphone from the last seven years. Security

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Report: Two new encryption standards will soon sweep away security controls

Tech Republic Security

and DNS-over-HTTPS (DoH) are implemented or they won't be able to analyze network traffic and detect cyberthreats, warns Forrester Research Security professionals must act before TLS 1.3

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Let’s Encrypt CA is revoking over 3 Million TLS certificates due to a bug

Security Affairs

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. “Let’s Encrypt found a bug in our CAA code. ” reads the advisory published by Let’s Encrypt.

Future Focused: A Safer Way to Expose Private Server Names

Cisco Security

Shrink the DNS attack surface with Auth-DoH. In this analogy, the invisibility superpower is DNS over HTTPS (DoH). It’s a new protocol that encrypts the DNS request to keep bad actors from discovering or altering domain names or snooping on users’ internet destinations.

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Sunburst: connecting the dots in the DNS requests


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. Our colleagues from FireEye published several DNS requests that supposedly led to CNAME responses on Github: [link]. Each one of these DNS requests also has the Base32-encoded UID.

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Demo: Your data has been encrypted! Stopping ransomware attacks with Malwarebytes EDR


Part 1: Your data has been encrypted! Part 1: Your data has been encrypted! As you can see, our files have in fact been encrypted by the ransomware across multiple directories with the “ encrypt ” extension. Let’s start a ping to Google’s DNS server.

Crooks Continue to Exploit GoDaddy Hole

Krebs on Security

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. Researcher Ron Guilmette discovered that Spammy Bear was able to hijack thousands of these dormant domains for spam simply by registering free accounts at GoDaddy and telling the company’s automated DNS service to allow the sending of email with those domains from an Internet address controlled by the spammers.

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Some Fortinet products used hardcoded keys and weak encryption for communications

Security Affairs

Researchers at SEC Consult Vulnerability Lab discovered multiple issues in several security products from Fortinet, including hardcoded key and encryption for communications. “The messages are encrypted using XOR “encryption” with a static key.”

Phish of GoDaddy Employee Jeopardized Escrow.com, Among Others

Krebs on Security

PT Monday evening, Escrow.com’s website looked radically different: Its homepage was replaced with a crude message in plain text: The profanity-laced message left behind by whoever briefly hijacked the DNS records for escrow.com. Running a reverse DNS lookup on this 111.90.149[.]49

Apple Will Offer Onion Routing for iCloud/Safari Users

Schneier on Security

Those are your IP address (who and exactly where you are) and your DNS request (the address of the website you want, in numeric form). Although it has received both your IP address and encrypted DNS request, Apple’s server doesn’t send your original IP address to the second stop.

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The NSA Wants Businesses to Use DoH. Here’s What You Need to Know.


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.

NSA explains how to avoid dangers of Wildcard TLS Certificates and ALPACA attacks

Security Affairs

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.

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Cisco Interop: Discovery of Designated Resolvers Protocol Implemented

Cisco Retail

It’s a forward-looking idea to improve DNS security. DDR allows for upgrading from insecure DNS to secure DNS. As the pioneers of secure DNS, Cisco Umbrella is once again at the forefront of policy enforcement and interoperability – ultimately making DNS more secure.

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Iran-linked APT34: Analyzing the webmask project

Security Affairs

Security expert Marco Ramilli published the findings of a quick analysis of the webmask project standing behind the DNS attacks implemented by APT34 (aka OilRig and HelixKitten ). According to Duo, “ OilRig delivered Trojans that use DNS tunneling for command and control in attacks since at least May 2016. The webmask k project, in my personal opinion, is an APT34 distinction since implementing their DNS attack core. On the other side the Solution1 uses python as DNS server.

IoT Inspector Tool from Princeton

Schneier on Security

QuickDDNS is a Dynamic DNS service provider operated by Dahua. 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." authentication encryption internetofthingsResearchers at Princeton University have released IoT Inspector , a tool that analyzes the security and privacy of IoT devices by examining the data they send across the Internet.

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GUEST ESSAY: A full checklist on how to spot pharming attacks — and avoid becoming a victim

The Last Watchdog

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. In this method of manipulating DNS, the attackers infiltrate the victim’s device and change the local host file. DNS Poisoning.

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Does Your Domain Have a Registry Lock?

Krebs on Security

13, 2020, which was the date the fraudsters got around to changing the domain name system (DNS) settings for e-hawk.net. That alert was triggered by systems E-HAWK had previously built in-house that continually monitor their stable of domains for any DNS changes.

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Point-of-Sale (POS) Security Measures for 2021

eSecurity Planet

UDPoS malware, only recently discovered by Forcepoint researchers, poses as a LogMeIn service pack and uses DNS requests to transfer stolen data to a command and control server. It’s a tough time to be a retailer.

VPN Test: How to check if your VPN is working or not


When you use a VPN, you create an impenetrable, encrypted tunnel between your computer and your VPN provider, and then join the Internet from one of your VPN provider’s computers. Testing for DNS and WebRTC leaks.

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Most Organizations Do DMARC Wrong. Here’s How to Do It Right.

eSecurity Planet

A public key is stored with the Domain Name System (DNS) for download by any email server receiving emails with the encrypted digital signature. Domains receiving emails can compare the envelope of the email and compare against DNS records.

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Padlocks, Phishing and Privacy; The Value Proposition of a VPN

Troy Hunt

I want a "secure by default" internet with all the things encrypted all the time such that people can move freely between networks without ever needing to care about who manages them or what they're doing with them. Now let's try the mobile app: What's the encryption story there?

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Flubot: the evolution of a notorious Android Banking Malware

Fox IT

In this new version, they introduced DNS-over-HTTPs (DoH). TAs kept the old classic DNS resolving code. TAs introduced code to randomly choose if DoH or classic DNS should be used. was using RC4 encryption to encrypt that information instead of the classic XOR.