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Darcula Phishing Network Leveraging RCS and iMessage to Evade Detection

Darcula Phishing Network Leveraging RCS and iMessage to Evade Detection

Mar 28, 2024 Cybercrime / Email Security
A sophisticated phishing-as-a-service (PhaaS) platform called  Darcula  has set its sights on organizations in over 100 countries by leveraging a massive network of more than 20,000 counterfeit domains to help cyber criminals launch attacks at scale. "Using iMessage and RCS rather than SMS to send text messages has the side effect of bypassing SMS firewalls, which is being used to great effect to target USPS along with postal services and other established organizations in 100+ countries," Netcraft  said . Darcula has been employed in several high-profile phishing attacks over the last year, wherein the smishing messages are sent to both Android and iOS users in the U.K., in addition to those that leverage package delivery lures by impersonating legitimate services like USPS. A Chinese-language PhaaS, Darcula is  advertised on Telegram  and offers support for  about 200 templates  impersonating legitimate brands that customers can avail for a monthly fee to set up phishin
SMTP Smuggling: New Flaw Lets Attackers Bypass Security and Spoof Emails

SMTP Smuggling: New Flaw Lets Attackers Bypass Security and Spoof Emails

Jan 03, 2024 Cyber Threat / Email Security
A new exploitation technique called Simple Mail Transfer Protocol ( SMTP ) smuggling can be weaponized by threat actors to send spoofed emails with fake sender addresses while bypassing security measures. "Threat actors could abuse vulnerable SMTP servers worldwide to send malicious emails from arbitrary email addresses, allowing targeted phishing attacks," Timo Longin, a senior security consultant at SEC Consult,  said  in an analysis published last month. SMTP is a TCP/IP protocol used to send and receive email messages over a network. To relay a message from an email client (aka mail user agent), an SMTP connection is established between the client and server in order to transmit the actual content of the email. The server then relies on what's called a mail transfer agent (MTA) to check the domain of the recipient's email address, and if it's different from that of the sender, it queries the domain name system (DNS) to look up the  MX (mail exchanger) rec
Can Your Business Email Be Spoofed? Check Your Domain Security Now!

Can Your Business Email Be Spoofed? Check Your Domain Security Now!

May 31, 2021
Are you aware of how secure your domain is? In most organizations, there is an assumption that their domains are secure and within a few months, but the truth soon dawns on them that it isn't. Spotting someone spoofing your domain name is one way to determine if your security is unsatisfactory - this means that someone is impersonating you (or confusing some of your recipients) and releasing false information. You may ask, "But why should I care?" Because these spoofing activities can potentially endanger your reputation. With so many companies being targeted by domain impersonators, email domain spoofing shouldn't be taken lightly. By doing so, they could put themselves, as well as their clients, at risk.  Your domain's security rating can make a huge difference in whether or not you get targeted by phishers looking to make money quickly or to use your domain and brand to spread ransomware without you knowing it! Check your domain's security rating with
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Unpacking 2024's SaaS Threat Predictions

Unpacking 2024's SaaS Threat Predictions

Jun 05, 2024SaaS Security / Artificial Intelligence
Early in 2024, Wing Security released its State of SaaS Security report , offering surprising insights into emerging threats and best practices in the SaaS domain. Now, halfway through the year, several SaaS threat predictions from the report have already proven accurate. Fortunately, SaaS Security Posture Management (SSPM) solutions have prioritized mitigation capabilities to address many of these issues, ensuring security teams have the necessary tools to face these challenges head-on. In this article, we will revisit our predictions from earlier in the year, showcase real-world examples of these threats in action, and offer practical tips and best practices to help you prevent such incidents in the future. It's also worth noting the overall trend of an increasing frequency of breaches in today's dynamic SaaS landscape, leading organizations to demand timely threat alerts as a vital capability. Industry regulations with upcoming compliance deadlines are demanding similar time-sens
How to Test and Improve Your Domain's Email Security?

How to Test and Improve Your Domain's Email Security?

Apr 26, 2021
No matter which type of business you are in, whether small, medium, or large, email has become an irrefutable tool for communicating with your employees, partners, and customers. Emails are sent and received each day in bulk by companies from various sources. In addition, organizations may also employ third-party vendors who may be authorized to send emails on behalf of the company. As a result, it becomes increasingly difficult to distinguish between sources that are legitimate and malicious. Here's a solution – PowerDMARC. This SaaS platform helps you assess your  email authentication  protocols from time to time and see if your domain is secure against spoofing with a DMARC record checker, so you can make changes if necessary. Check Your Domain Today!  Use our free tool to examine your domain's DMARC, SPF, DKIM, BIMI, and MTA-STS records instantly to ensure your domain is protected from impersonation and email fraud! Importance of Having Robust Email Security in 2021 S
Fake Bomb Threat Emails Demanding Bitcoins Sparked Chaos Across US, Canada

Fake Bomb Threat Emails Demanding Bitcoins Sparked Chaos Across US, Canada

Dec 14, 2018
"Pay $20,000 worth of bitcoin, or a bomb will detonate in your building" A massive number of businesses, schools, government offices and individuals across the US, New Zealand and Canada on Thursday received bomb threats via emails that caused nationwide chaos, forcing widespread evacuations and police response. The bomb threat emails were apparently sent by spammers, threatening people that someone has planted bombs within their building that will be detonated unless a bitcoin payment of $20,000 is paid by the end of the business day. "I write to inform you that my man has carried the bomb (Tetryl) into the building where your business is located," one of the emails posted to social media read . "It was assembled according to my instructions. It can be hidden anywhere because of its small size, it cannot damage the supporting building structures, but there will be many victims in case of its explosion." "You must pay me by the end of the
MailSploit — Email Spoofing Flaw Affects Over 30 Popular Email Clients

MailSploit — Email Spoofing Flaw Affects Over 30 Popular Email Clients

Dec 05, 2017
If you receive an email that looks like it's from one of your friends, just beware! It's possible that the email has been sent by someone else in an attempt to compromise your system. A security researcher has discovered a collection of vulnerabilities in more than 30 popular email client applications that could allow anyone to send spoofed emails bypassing anti-spoofing mechanisms. Discovered by security researcher Sabri Haddouche , the set of vulnerabilities, dubbed MailSploit , affects Apple Mail (macOS, iOS, and watchOS), Mozilla Thunderbird, several Microsoft email clients, Yahoo Mail, ProtonMail, and others. Although most of these affected email client applications have implemented anti-spoofing mechanisms, such as DKIM and DMARC, MailSploit takes advantage of the way email clients and web interfaces parse "From" header. Email spoofing is an old-school technique, but it works well, allowing someone to modify email headers and send an email with the fo
Bug in Gmail app for Android Allows anyone to Send Spoofed Emails

Bug in Gmail app for Android Allows anyone to Send Spoofed Emails

Nov 14, 2015
A security researcher has discovered an interesting loophole in Gmail Android app that lets anyone send an email that looks like it was sent by someone else, potentially opening doors for Phishers. This is something that we call E-mail Spoofing – the forgery of an e-mail header so that the email appears to have originated from someone other than the actual source. Generally, to spoof email addresses, an attacker needs: A working SMTP (Simple Mail Transfer Protocol) server to send email A M ailing Software However, an independent security researcher, Yan Zhu , discovered a similar bug in official Gmail Android app that allowed her to hide her real email address and change her display name in the account settings so that the receiver will not be able to know the actual sender. How to Send Spoofed Emails via Gmail Android App? To demonstrate her finding, Zhu sent an email to someone by changing her display name to yan ""security@google.com" (w
AOL Hit by Massive Data Breach, Urges Users to Change Passwords

AOL Hit by Massive Data Breach, Urges Users to Change Passwords

Apr 29, 2014
If you are a user of the American On-Line (AOL) mail service then you are advised to change your password as soon as possible. AOL Inc. on Monday confirmed the company suffered a massive data breach that may have affected a "significant number" of email accounts. The company has issued a warning to users that their personal information including email addresses, postal addresses, address books, encrypted passwords and the encrypted answers to security question-answers, has been stolen by attackers, the New York-based company said Monday. " The ongoing investigation of this serious criminal activity is our top priority, " AOL said in a blog post . " We are working closely with federal authorities to pursue this investigation to its resolution. Our security team has put enhanced protective measures in place, and we urge our users to take proactive steps to help ensure the security of their accounts ." AOL said it began investigating the
Twitter added DMARC support to prevent email phishing

Twitter added DMARC support to prevent email phishing

Feb 22, 2013
Twitter announced via its blog today that it has begun using a new method called Domain-based Message Authentication, Reporting and Conformance (DMARC) to help prevent email phishing. DMARC is actually a standard for preventing email spoofing, in order to make it harder for attackers to send phishing emails that appear to come from twitter.com addresses. Sometimes it's not easy to figure out if an email is legitimate or not. It implementing the SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) email message validation and authentication systems. Twitter says it started using the DMARC earlier this month. While the DMARC specification does need support from e-mail services, outfits including AOL, Gmail, Hotmail or Outlook and Yahoo already make use of it. It has also been implemented by services like Facebook, PayPal, Amazon and now Twitter. If you don't use Gmail or one of the other email providers listed above, you may not be protected. It might be
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