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invoice phishing
April 25th, 2022December 10th, 2024
Jaqueline SantosBlog, Insider, On-the-go, Trends

We analyze an Ousaban malware campaign phishing for electronic invoices and income tax.

By Alexandre Siviero (updated April 29) - This is an analysis of a Brazilian banking malware first spotted in 2017, called Ousaban, or Javali. There is an ongoing campaign spreading this malware with phishing...
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April 20th, 2022December 10th, 2024
Jaqueline SantosBlog

Quick guide to Ransomware: data hijacking and why are companies at risk?

Quando se trata de segurança cibernética, empresas de todos os tamanhos e segmentos precisam lidar com um desafio comum: a abundância e gravidade dos ataques de ransomware. Cada vez mais usado por cibercriminosos, esse tipo de malware pode paralisar toda…
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April 14th, 2022December 10th, 2024
Jessica TrucatBlog, Reviews, Security, Trends

Get to know the top threats affecting Brazil in the last month

Brazil is one of the countries that suffers the most cyber-attacks in the world - and this scenario has worsened considerably since the pandemic. Being aware of the threats on the rise in Brazil and around the world is becoming increasingly important and...
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April 13th, 2022December 10th, 2024
Jaqueline SantosBlog, Security

How much is your data worth? For hackers, millions of dollars

We'd like to start by asking you to imagine the volume of information circulating in your company. Histories of confidential negotiations with clients, financial files such as annual profits, strategic information on the direction of operations and a multitude of other data from...
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ZERO-DAY
April 5th, 2022December 10th, 2024
Jaqueline SantosBlog, Insider

Spring4Shell: new zero-day discovered

Spring-core is a framework widely used in Java applications that allows software developers to develop Java applications with enterprise-level components. A new vulnerability affecting this product has been identified and exploits and proofs of concept that...
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DLL HIJACKING
March 28, 2022December 10th, 2024
Jaqueline SantosBlog, Insider

DLL Hijacking - injecting DLLs for evasion and persistence

There is a MITRE sub-technique for injecting DLLs, called DLL Hijacking. And in this post, you'll find a theoretical explanation and a simple proof of concept, with a DLL programmed in C++ that opens the Windows calculator...
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March 4th, 2022December 10th, 2024
Jaqueline SantosBlog, Insights, On-the-go

A show of support for the Russian government led to the exposure of classified information from the Conti group

Following the Conti group's announcement of support for the Russian government, an anonymous person identified on Twitter only as ContiLeaks has declared his support for Ukraine in the ongoing war. On February 27, he began leaking internal information from...
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Top 10 versions of Windows
February 10th, 2022December 10th, 2024
Jaqueline SantosBlog, Trends

The TOP 10 Windows versions with the most patches and how to update them

By Átila Altoé and Laura Cardillo It's now a Microsoft tradition to release updates for different editions of the operating system every Tuesday. That's why it's known as Patch Tuesday. And this week, we found out which 10 versions of Windows...
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Malicious Power Point
January 20th, 2022December 10th, 2024
Jaqueline SantosBlog, Insider

From phishing to malware, we analyze all the stages of a fileless attack

By Alexandre Siviero The phishing alert that distributed a malicious Power Point was made by researchers Ankit Anubhav and Germán Fernández, who contacted the ISH team. These researchers attributed the threat to NjRAT, specifically...
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Exchange servers
January 6th, 2022December 10th, 2024
Jaqueline SantosBlog, Insider

The turn of the year was marked by e-mail problems on Exchange servers

By Alexandre Siviero, Atila Altoé and Laura Cardillo As soon as 2022 began, a problem in the component that scans attachments in emails on Exchange servers interrupted the messaging queues. One interesting point was the similarity of the programming flaw...
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