How to remove sensitive information from a Github repository

Hello everyone! In this episode, I would like to talk about Github and how to remove sensitive information that was accidentally uploaded there. Alternative video link for Russia: This is a fairly common problem. When publishing the project code on Github, developers forget to remove credentials:...

Microsoft Patch Tuesday March 2022

Hello everyone! I am glad to greet you from the most sanctioned country in the world. Despite all the difficulties, we carry on. I even have some time to release new episodes. This time it will be about Microsoft Patch Tuesday for March 2022. Alternative video link for Russia: I do the analysis a...

Microsoft Patch Tuesday February 2022

Hello everyone! This episode will be about Microsoft Patch Tuesday for February 2022. I release it pretty late, because of the my previous big episode about the blindspots in the Knowledge Bases of Vulnerability Scanners. Please take a look if you havent seen it. Well, if you are even slightly...

VMconf 22: Blindspots in the Knowledge Bases of Vulnerability Scanners

Hello everyone! This video was recorded for the VMconf22 Vulnerability Management conference. I want to talk about the blind spots in the knowledge bases of Vulnerability Scanners and Vulnerability Management products. This report was presented in Russian at Tenable Security Day 2022. The video i...

End of CentOS Linux. Where to migrate?

Hello everyone! As you probably know, CentOS Linux, the main Enterprise-level Linux server distribution, will soon disappear. It wasnt hard to predict when RedHat acquired CentOS in 2014, and now it is actually happening. End of life of CentOS Linux 8 was 31.12.2021. There wont be CentOS Linux as...

Microsoft Patch Tuesday January 2022

Hello everyone! This episode will be about Microsoft Patch Tuesday for January 2022. Traditionally, I will use my open source Vulristics tool for analysis. This time I didnt make any changes to how connectors work. The report generation worked correctly on the first try. python3.8 vulristics.py...

VMconf 22: Why Didn’t It Work As Planned and What’s Next?

Hello everyone! In this episode, I want to talk about VMconf 22. It was an experiment from the beginning. Is it possible to host a Vulnerability Management event with little effort and budget? Looks like no. So I would like to talk about why the original idea failed and the future of VMconf. The...

Log4j “Log4Shell” RCE explained (CVE-2021-44228)

Hello everyone! I decided to make a separate episode about Log4Shell. Of course, there have already been many reviews of this vulnerability. But I do it primarily for myself. It seems to me that serious problems with Log4j and similar libraries will be with us for a long time. Therefore, it would...

Microsoft Patch Tuesday December 2021

Hello everyone! Its even strange to talk about other vulnerabilities, while everyone is so focused on vulnerabilities in log4j. But life doesnt stop. Other vulnerabilities appear every day. And of course, there are many critical ones among them that require immediate patching. This episode will b...

Vulnerability Intelligence based on media hype. It works? Grafana LFI and Log4j “Log4Shell” RCE

Hello everyone! In this episode, I want to talk about vulnerabilities, news and hype. The easiest way to get timely information on the most important vulnerabilities is to just read the news regularly, right? Well, I will try to reflect on this using two examples from last week. I have a security...

QSC21, VMDR Training and Exam

Hello everyone! On the one hand, because of the pandemic, we have become more distant from each other. We work mostly remotely from home. Traveling to a conference in another country has become much more difficult than it used to be. Now it is not only expensive. It has become much more difficult...

Vulristics Command Line Interface, improved Product & Vuln. Type Detections and Microsoft Patch Tuesday November 2021

Hello everyone! In this episode I want to highlight the latest changes in my Vulristics project. For those who dont know, this is a utility for prioritizing CVE vulnerabilities based on data from various sources.. Currently Microsoft, NVD, Vulners, AttackerKB. Command Line Interface I started...

VMconf 22 Vulnerability Management conference: Call For Papers started

Hello everyone! This episode will be about the VMconf 22 Vulnerability Management conference. CFP started on November 1, which will last a month and a half. So please submit your talk or share this video with someone who might be interested. Lets talk about the conference itself. All started with...

Security News: Microsoft Patch Tuesday October 2021, Autodiscover, MysterySnail, Exchange, DNS, Apache, HAProxy, VMware vCenter, Moodle

Hello everyone! This episode will be about relatively recent critical vulnerabilities. Lets start with Microsoft Patch Tuesday for October 2021. Specifically, with the vulnerability that I expected there, but it didnt get there. Autodiscover leak discovered by Guardicore Labs "Autodiscover, a...

Career Navigator talk for IT Hub College

Last week I gave a "Career Navigator" talk for the students of the IT Hub College in Moscow. By the way, this college has a very interesting practical information security program. If it is relevant for you, check it out. Ive never talked so much about myself in public. It was like giving advises...

Security News: Microsoft Patch Tuesday September 2021, OMIGOD, MSHTML RCE, Confluence RCE, Ghostscript RCE, FORCEDENTRY Pegasus

Hello everyone! This time, lets talk about recent vulnerabilities. Ill start with Microsoft Patch Tuesday for September 2021. I created a report using my Vulristics tool. You can see the full report here. The most interesting thing about the September Patch Tuesday is that the top 3 VM vendors...

Microsoft Defender for Endpoint: The Latest Versions of Antivirus Engine & Signatures

In a previous episode on Microsoft Defender for Endpoint, I described how to get a list of antivirus engine and signatures versions for the hosts in your infrastructure using the Microsoft Graph API. But the problem remains. You know the versions that are currently installed on the hosts. But whe...

Security News: Exchange ProxyShell, Zoom RCE, Citrix Canceled PT Acknowledgments, Cisco No Patch Router RCEs

Hello everyone! This is a new episode with my comments on the latest Information Security news. Exchange ProxyShell I want to start with something about attacks on Exchange. ProxyShell is in the news, the LockFile ransomware compromised more than 2000 servers. On the other hand, there is basicall...

Security News: Microsoft Patch Tuesday August 2021, Phishers Started Using reCAPTCHA, Scan 1 IP and Go to Jail

Hello everyone! Yet another news episode. Microsofts August Patch Tuesday Lets start with Microsofts August Patch Tuesday. I think the most interesting thing is that it contains a fix for the PetitPotam vulnerability. I talked about this vulnerability two weeks ago. At the time, Microsoft had no...

How to get Antivirus-related Data from Microsoft Defender for Endpoint using Intune and Graph API

Hello everyone! In this episode, I would like to tell you how I tried to get automatically antivirus-related data current status, engine and signature version, last full scan date from Microsoft Defender for Endpoint using Microsoft Intune and the Graph API. Why is this necessary? You might assum...

Last Week’s Security News: Black Hat Pwnie Awards, iPhone Checks Photos, Evil Windows Print Server, Cisco VPN Routers Takeovers

Hello everyone! Last Weeks Security News, August 1 - August 8. Black Hat Pwnie Awards Last week was more quiet than normal with Black Hat USA and DEF CON security conferences. I would like to start with the Pwnie Awards, which are held annually at Black Hat. Its like an Oscar or Tony in the...

Last Week’s Security news: Serious Sam in Metasploit, PetitPotam, Zimbra Hijack, Joint Advisory TOP30 CVEs

Hello everyone! Last Weeks Security News, July 26 - August 1. Serious Sam in Metasploit Last week I talked about the Serious Sam vulnerability CVE-2021-36934, also known as HiveNightmare. The name HiveNightmare comes from the fact that Windows stores its registry data in a small number of...

How to fix “Nessus failed to load the SSH private key” error?

If you are using Nessus to scan Linux hosts and authenticate by key, you may encounter this problem. You have generated the keys correctly, placed the public key on a remote server. You can connect to this server using the private key. ssh -p22 -i privatekey [email protected] But when...

Last Week’s Security news: Pegasus, SeriousSAM, Sequoia

Hello everyone! After 4 episodes of the Last Weeks Security news, I decided to change the format. I will no longer try to cover all the important news, because it takes a long time to prepare such reviews. So, from now on, I will focus only on a few news of the past week, which I subjectively...

My thoughts on the “2021 Gartner Market Guide for Vulnerability Assessment”. What about the quality?

The Gartner Vulnerability Management Reports are one of the few marketing reports that I try to read regularly. This started back in the days when I was working for a VM vendor doing competitive analysis. Gartner is one of the few organizations that think about Vulnerability Assessment and...

Last Week’s Security news: Exploits for ForgeRock, vSphere, Apache Tomcat, new Print Spooler vuln, Kaseya Patch and REvil, SolarWinds, Schneider Electric, Bulletins

Hello guys! The fourth episode of Last Week’s Security news, July 12 – July 18. I would like to start with some new public exploits. I think these 4 are the most interesting. If you remember, 2 weeks ago I mentioned the ForgeRock Access Manager and OpenAM vulnerability CVE-2021-35464. Now there i...

Vulristics Microsoft Patch Tuesday July 2021: Zero-days EoP in Kernel and RCE in Scripting Engine, RCEs in Kernel, DNS Server, Exchange and Hyper-V

Hello everyone! For the past 9 months, Ive been doing Microsoft Patch Tuesday reviews quarterly. Now I think it would be better to review the July Patch Tuesday while the topic is still fresh. And that will save us some time in the next Last Week’s Security news episode. So, July Patch Tuesday, 1...

Last Week’s Security news: PrintNightmare patches and Metasploit, Kaseya CVEs, Morgan Stanley Accellion FTA, Cisco BPA and WSA, Philips Vue PACS, CISA RVAs, Lazarus job offers

Hello guys! The third episode of Last Week’s Security news, July 5 - July 11. There was a lot of news last week. Most of them was again about PrintNightmare and Kaseya. The updates for PrintNightmare CVE-2021-34527 were finally released mid-week. It became possible not only to disable the service...

Vulristics: Microsoft Patch Tuesdays Q2 2021

Hello everyone! Lets now talk about Microsoft Patch Tuesday vulnerabilities for the second quarter of 2021. April, May and June. Not the most exciting topic, I agree. I am surprised that someone is reading or watching this. For me personally, this is a kind of tradition. Plus this is an opportuni...

Last Week’s Security news: PrintNightmare, Kaseya, Intune, Metasploit Docker escape

Hello guys! The second episode of Last Week’s Security news from June 28 to July 4. The most interesting vulnerability of the last week is of course Microsoft Print Spooler "PrintNightmare". By sending an RpcAddPrinterDriverEx RPC request, for example over SMB, a remote, authenticated attacker ma...

Vulristics HTML Report Update: Table for Products, Table for Vuln. Types and “Prevalence”

Hi guys! I was on vacation this week. So I had time to work on my Vulristics project. For those who dont know, this is a framework for prioritizing known CVE vulnerabilities. I was mainly grooming the HTML report. I added a logo at the top, set a max width for the report, added a timestamp when t...

Last Week’s Security news: Cisco ASA, BIG-IQ, vSphere, Solaris, Dlink, iPhone %s, DarkRadiation, Google schema, John McAfee

Hello, today I want to experiment with a new format. I will be reading last weeks news from my @avleonovnews channel, which I found the most interesting. I do this mostly for myself, but if you like it too, then that would be great. Please subscribe to my YouTube channel and my Telegram...

PHDays 10: U.S. Sanctions, My Talk on Vulristics, Other Great Talks Related to VM

Today I will talk about the Positive Hack Days conference, which took place on May 20 and May 21 in Moscow. I can say that this was and remains the main event for Information Security Practitioners in Russia. First of all, I have to say a few words about the sanctions. The organizer of the event,...

Getting Hosts from Microsoft Intune MDM using Python

Today I want to talk about Microsoft Intune. It is a Mobile Device Management platform. Well, I think that the importance of MDM systems has become much higher than it was before the days of covid-19. Simply because a lot more people now work remotely using corporate laptops. And if these people...

AM Live Vulnerability Management Conference Part 2: What was I talking about there

Hello all! It is the second part about AM Live Vulnerability Management conference. In the first part I made the timecodes for the 2 hours video in Russian. Here I have combined all my lines into one text. What is Vulnerability Management? Vulnerability Management process is the opposite of the...

AM Live Vulnerability Management Conference Part 1: Full video in Russian + Timecodes in English

Hello all! 2 weeks ago I participated in the best online event fully dedicated to Vulnerability Management in Russia. It was super fun and exciting. Thanks to all the colleagues and especially to Lev Paley for the great moderation! I have talked out completely. Everything I wanted and the way I...

Vulristics: Microsoft Patch Tuesdays Q1 2021

Hello everyone! It has been 3 months since my last review of Microsoft vulnerabilities for Q4 2020. In this episode I want to review the Microsoft vulnerabilities for the first quarter of 2021. There will be 4 parts: January, February, March and the vulnerabilities that were released between the...

Vulristics: Beyond Microsoft Patch Tuesdays, Analyzing Arbitrary CVEs

Hello everyone! In this episode I would like to share an update for my Vulristics project. For those who dont know, in this project I am working on an alternative vulnerability scoring based on publicly available data to highlight vulnerabilities that need to be fixed as soon as possible. Roughly...

Microsoft Defender for Endpoint: Why You May Need It and How to Export Hosts via API in Python

Hello everyone! In this episode, I want to talk about Microsoft Defender for Endpoint. It’s not a well-known free Defender antivirus built in Windows 10, but an enterprise level solution with the similar name. Yes, the naming is pretty confusing. I will not repeat Microsofts marketing thesis. Jus...

Vulners Linux Audit API for Host Vulnerability Detection: Manual Auditing, Python Scripting and Licensing

Hello everyone! This episode will be about Vulners Linux Audit API, which allows you to detect vulnerabilities on a Linux host knowing only the OS version and installed packages. I had a similar post about this 4 years ago, but some details have changed, so I came back to this topic. Manual Audit...

Vulristics Vulnerability Score, Automated Data Collection and Microsoft Patch Tuesdays Q4 2020

In this episode I would like to make a status update of my Vulristics project. For those who dont know, in this project I retrieve publicly available vulnerability data and analyze it to better understand the severity of these vulnerabilities and better prioritize them. Currently, it is mainly...

My projects that are not related to Information Security: Yennysay TTS and PyTouchOk companion app

Thanks to the long New Year holidays in Russia, I had time to work on my own projects that are not related to information security. I released them on github and recorded short demos by the way, Zoom is quite convenient for this! ?. Yennysay is a GUI text-to-speach tool that uses a free offline T...

MaxPatrol VM: An Ambitious Vision for Vulnerability Management Transformation

In this episode, I would like to share my thoughts about the new Vulnerability Management product by Positive Technologies - MaxPatrol VM. It was presented on November 16th, at the Standoff365 online conference full video in Russian. The presentation and concept of the product were very good. I...

Nessus Essentials with offline registration and plugin updates

In this episode, I would like to talk about Nessus Essentials and, in particular, how to register and update it without direct internet access. Nothing complicated, but there are a couple of pitfalls that I would like to share. Lets say you need to scan a host in a critical autonomous segment whe...

Microsoft Patch Tuesday September 2020: Zerologon and other exploits, RCEs in SharePoint and Exchange

I would like to start this post by talking about Microsoft vulnerabilities, which recently turned out to be much more serious than it seemed at first glance. Older Vulnerabilities with exploits "Zerologon" Netlogon RCE CVE-2020-1472 One of them is, of course, the Netlogon vulnerability from the...

Microsoft Patch Tuesday August 2020: vulnerabilities with Detected Exploitation, useful for phishing and others

This time I would like to review not only the vulnerabilities that were published in the last August Microsoft Patch Tuesday, but also the CVEs that were published on other, not Patch Tuesday, days. Of course, if there are any. But lets start with the vulnerabilities that were presented on MS Pat...

Microsoft Patch Tuesday July 2020: my new open source project Vulristics, DNS SIGRed, RDP Client and SharePoint

I am doing this episode about July vulnerabilities already in August. There are 2 reasons for this. First of all, July Microsoft Patch Tuesday was published in the middle of the month, as late as possible. Secondly, in the second half of July I spent my free time mostly on coding. And I would lik...

Barapass, Tsunami scanner, vulnerabilities in Windows DNS Server and SAP products, weird attack on Twitter

This episode is based on posts from my Telegram channel avleonovcom, published in the last 2 weeks. So, if you use Telegram, please subscribe. I update it frequently. Barapass update I recently released an update to my password manager barapass. BTW, it seems to be my only pet project at the MVP...

Microsoft Patch Tuesday June 2020: The Bleeding Ghost of SMB

This time, Microsoft addressed 129 vulnerabilities: 11 critical and 118 important. In fact, in the file that I exported from the Microsoft website, I saw 2 more CVEs CVE-2020-1221, CVE-2020-1328 related to Microsoft Dynamics 365 on-premises. But there is no information on them on the Microsoft...

How to list, create, update and delete Grafana dashboards via API

I have been a Splunk guy for quite some time, 4 years or so. I have made several blog posts describing how to work with Splunk in automated manner see in appendix. But after their decision to stop their business in Russia last year, including customer support and selling software and services, it...