I published an article on the IBM SecurityIntelligence blog on Dark Web TLS/SSL Certificates Highlight Need for Shift to Zero Trust Security
The post has a very brief introduction to HTTPS and TLS/SS, takes a look at the ‘black market’ for TLS/SSL certificates and concludes with some protection measures that you can take.
I published an article on the IBM SecurityIntelligence blog on Missed DNS Flag Day? It’s Not Too Late to Upgrade Your Domain Security. The post gives some insights on DNS Extension mechanisms, Backward Compatibility and DNS Flag Day and which steps you need to take to be (and remain) ready for DNS Flag Day. I also includes an introduction on other DNS features as DNS cookies and DNSSEC.
I published an article on the IBM SecurityIntelligence blog on Breaking Down the Incident Notification Requirements in the EU’s NIS Directive. The posts focus specifically on the aspects of incident notification contained in the NIS Directive as they apply to operators of essential services (OES).
Mimikatz allows users to view and save authentication credentials like Kerberos tickets and Windows credentials. It’s freely available via Github. This post is not a tutorial on how to use Mimikatz, it lists the commands that I recently had to use during an assignment in an old Windows 7 environment.
Dump hashes from registry; Use this dump offline to extract the hashes with Mimikatz; Crack the hashes with hashcat.
Because most unaltered versions of Mimikatz … Read more.
DNS logging and monitoring is important! Monitoring DNS logs allows you to analyze and detect C&C traffic and have access to crucial information to reduce the dwell time and detect breaches. Combined with Passive DNS it’s a very valuable data source to be used during incident response.
But DNS logging comes at a price. Every log operation requires the system to write out an entry to disk (besides also properly formatting the log string). This … Read more.
I published an article on the IBM SecurityIntelligence blog covering Is It Time to Start a PSIRT? Why Your CSIRT May Not Be Enough. The post describes what a PSIRT is and where it is located within an organization.
Setting up a PSIRT involves developing a charter, assembling the team, having budget for long-term operations and have a good relationship with your stakeholders. I also cover the most usual source that you can use to … Read more.
I published an article on the IBM SecurityIntelligence blog on Why You Need a BGP Hijack Response Plan. The posts starts with an introduction to BGP, how BPG routing exactly works and what a BGP hijack is.
The bulk of this type of incident response plan is done during the preparation and detection phase, for the containment, eradication and recovery you will most likely have to depend on your upstream ISPs.
An overview of the security conferences in Europe in 2019 that I want to attend. The list is also available as a Google calendar. Feel free to suggest updates.
Google Calendar for Security Conferences Europe or as an ICS fileSecurity Conferences_vnekk5gebvbngjop592s2tqed4@group.calendar.google.com.
56th TF-CSIRT meeting & FIRST Regional Symposium EuropeTallinn, Estonia2019 January 21 > 23 QuBitBelgrado, Serbia2019 Feb 7 BlueHatTel Aviv, Israel2019 Feb 6 > 7 Vienna Cyber Security Week Critical InfrastructureVienna, Austria2019 Mar 11 > … Read more.
Another day, another phishing website. This time again a phishing site with directory listing enabled. This phishing websites targets customers of the Belgian bank Beobank. The link to the site gets delivered via e-mail, claiming to come from the webmaster with an important security message.
This is how the phishing website looks like:
Moving up a few directories allows us to download the ZIP file containing the phishing code.
There are … Read more.
While I was analyzing a standard phishing e-mail my attention was drawn to the fact that the phishing page loaded remote Coldfusion scripts. The phishing mail itself is pretty default. It claims to come from e-mail support telling you that your mailbox is full.
The included cfform component allows to build a form with CFML custom control tags providing more functionality than standard HTML form input elements.
The phishing site was located … Read more.