Posts by Jérôme Segura

I'm Senior Security Researcher at Malwarebytes where I investigate and uncover various threats and scams. In my spare time, I enjoy tasting some good wines and cheeses. Follow me @jeromesegura.

SMS Scams: How To Defend Yourself

Cyber-crooks are spamming through every avenue they can, hoping to lure their victims into revealing personal information or tricking them with scam SMS text messages.

Apple’s OS X FBI Ransomware Goes Global

Further customizations of the Mac ransom pages discovered today shows the bad guys are busy updating their templates for each country’s police force.

A Q&A about the Mac FBI “ransomware”

For years, Windows users have been plagued by ransomware demanding several hundred dollars to unlock their computers. Now there’s a growing market to attack Macs.

Facebook’s rollout of Graph Search is said to deliver a brand new experience that allows you to get information you would not get from a typical search engine, something like a more ‘wholesome search experience.’

Porn on YouTube Leads to Premium-Rate SMS Scams

Spammers are beating YouTube’s filters to upload pornographic images and tricking people into following a hyperlink to view more. And it comes as a premium-rate SMS, asking for age confirmation when it really is about charging you an expensive fee to view the material.

Ubisoft says its customer data including names, emails and encrypted passwords were accessed by unauthorized third parties and should be considered part of the public domain now.

Fake Opera Browser Update Distributes Ransomware

Following a breach on Opera’s network and using one of its older code-signing certificate to digitally sign a nasty Trojan downloader part of the Zbot family and package it as an update for the Opera browser. An estimated 300 million users may have been infected.

While some attempts have been made by Google, Facebook and the likes to come up with new privacy features in their products whatever hope was left may very well have been shattered with the recent NSA leaks about the PRISM surveillance program.

A Guide to Website Security

Having your own website is hard enough. In addition to adding content, trying to grow your audience, maintaining it, now you have to be cautious of malware possibly being spread through your beloved website?

While many repositories like Cydia, a program that allows you to download pirated apps for free on your Jailbroken iPod / iPhone / iPad, beyond the copyright infringement issue, there is also the risk of downloading an infected app and getting more than what you bargained for.

Awareness and education about online dangers is essential but headlines like “Malware That Drains Your Bank Account Thriving On Facebook” instill fear while at the same time blame Facebook — something that may not be entirely justified.

Have you recently seen an ad or received an email from a friend that promoted work-at-home and get-rich-quick schemes?

If you use your debit or credit card to buy groceries or get cash out of an ATM you might want to know that the bad guys could have a piece of it.

Online PC Support Scams: Turning the Tables

You may recall a post I wrote back in April about fake Microsoft phone support calls. I had received a call from scammers whose job was to trick me into buying a bogus program for ‘only’ $299. When they saw I was not willing to pay, they got mad and deleted documents and pictures off […]

New Internet Explorer 8 Zero Day

On the 1st of May (a date which many countries celebrate as Labor Day), the US Department of Labor’s website was hacked. This was described as a watering hole type of attack, aimed at certain people only. The first news reports identified it as an already known and patched Internet Explorer vulnerability until today, when […]

Tech support scams: a look behind the curtain

My previous post about fake support calls from Microsoft generated a lot of reactions. I was quite astounded by how many other people also had similar experiences and that this was still going strong. In this post, we will try to better understand how such companies operate and why despite so many complaints, they are […]

Safeguarding your online accounts against hackers

It is very likely that you or someone you know has had one or multiple of their online accounts hacked into. It happens to everybody: individuals, small and big companies alike, can have disastrous consequences and makes you feel extremely vulnerable. In this post we will talk about some tips to give cyber-criminals a hard(er) […]

Cyber Criminals Never Waste A Tragedy

We are accustomed to seeing criminals take advantage of big events to push malware, so we always keep an eye out for malicious emails or websites. This one was no exception with customized spam messages and malicious links all leading to nasty infections. The emails come with a subject line such as “Aftermath to explosion […]

[ Need assistance? Please consult our Help & Resource Page ]  Have you ever received a call from someone with a heavy Indian accent from Microsoft saying your computer had errors or viruses? The purpose of these calls is to get an easy $299 (or whatever amount they choose) by scaring you into thinking there’s […]

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