P.Leclercq in Security 2024-03-30 technology
Besides SPF, there is another protocol that ensures sent emails have not been modified during their journey, and that the sender is really sending the email from the address listed in the email header. This is DKIM, DomainKeys Identified Mail.
DKIM uses cryptographic signing to ensure the content has not been modified during the journey, and the sender domain is really what it pretends to be.
P.Leclercq in Security 2024-03-21 technology
In a previous article, we have seen an external attacker could send an email carrying an address belonging to your domain, and how to detect it via the headers. Sender Policy Framework (SPF) helps validating the real source of the email, reducing the likelihood of malicious actors sending emails that appear to come from a legitimate source.
P.Leclercq in Security 2024-03-06 technology
In a previous article, we have described the envelope and email headers.
Among the envelope headers, the Received headers are very interesting to trace the email path.
P.Leclercq in Security 2024-02-22 technology
Interpreting email headers is an essential skill when dealing with email-related issues or investigating the source of an email. Email headers contain valuable information about the path an email took from the sender to the recipient. It allows debugging email issues like non-delivery and detecting fraud or phishing.
In this article, we will learn how to interpret the basic data of email headers.
P.Leclercq in Security 2023-11-10 technology
P.Leclercq in Security 2023-11-05 technology
SMTP (Simple Mail Transport Protocol) is an Internet standard communication protocol for email transmission. SMTP describes how your emails are sent from your email client on your PC or phone, or your webmail interface, to their destination.
P.Leclercq in Security 2023-10-25 technology
While browsing the web, you have probably encountered references to web pages with a short and rather cryptic URL, like bit.ly/3rZ7Xws, t.co/sJpSI7yCEb, ow.ly/R7LE50PYCHn or tinyurl.com/yc5scfaw.
P.Leclercq in Security 2023-10-20 technology
What is DNS, the Domain Name System?
DNS is traditionally compared with the phone book of a network; it’s the software that translates human readable names to network (IP) addresses.
P.Leclercq in Security 2023-09-24 security tips
As noted in the previous article about reporting phishing to authorities, sharing the methods and means used by hackers is important to prevent others from becoming victims of criminal acts.
Fortunately, major browser manufacturers have recognized the importance of user safety and have provided mechanisms protecting the user.
P.Leclercq in Security 2023-09-18 security tips
Reporting phishing attacks to authorities is a crucial step in combating cybercrime. In this article, we’ll explore why reporting phishing attacks is essential, and we’ll provide insights into the challenges authorities face in catching these cyber pirates.
