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Posts Tagged ‘virus’

Does secure email make you more vulnerable to spam and viruses?

Monday, August 28th, 2017

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Anti-virus scanning for files uploaded through your Web forms with SecureForm

Friday, April 22nd, 2016

If you have a web form that allows end users to upload files, then you may be placing yourself at risk.  End users can upload virus-laden files or malware through these forms.  Opening such files can place your computer at risk — especially if your computer does not itself have real-time anti-virus scanning enabled, that scanning software is old or not well designed, or it is not updating itself frequently.

LuxSci SecureForm form data processing now automatically scans all uploaded files for viruses in real time.  If a virus or malware is detected, the form submission will be automatically blocked.  Current SecureForm users are automatically protected by this service.

Defense in depth is an important security measure.  Multiple barriers, multiple scans, and multiple checks all help to protect your systems.  If you are accepting arbitrary files over the Internet, have them scanned immediately on upload.  Have them scanned again when you access them using your own computer’s anti-virus system.  We are in the days where viruses do not just slow down your computer, they encrypt and lock away all of your data and/or put your identity up for sale.  You need to take as many precautions as possible to minimize your possible exposure to threats and the risk to your business.

Ebola is Infecting Computers; How to Protect Yours

Monday, October 20th, 2014

Spam and Virus FilterNo, your computer can’t catch the actual Ebola virus… its not even airborn yet.  However, we are finding that criminals are taking advantage of the hype and scare and curiosity over Ebola to infect people’s computers more easily.

This is commonly being done via email.  There are four prevalent types of email going around now that are meant to infect your computer:

  1. A fake report on the Ebola virus — when you click the link to read more, your Windows machine is infected with a virus that can collect and steal your personal information.
  2. A fake email from telecommunications provider that contains an important “Ebola Presentation” for your to download and view.  If you do it, you install malware that can allow others to remotely control your computer, access your web cam, log what you type, etc.
  3. Fake emails talking about an “Ebola Cure” which contains a malware attachment and which asks you to forward the news on to your friends.  The malware records your keystrokes and downloads additional malware on to your computer
  4. Fake emails about Ebola news and lists of “precautions”.

There are many other types of attacks and attack vectors that are being and can be exploited.  We will go over many of these, below, and how to protect yourself from them.  You should be very wary of any email received about Ebola, even if it appears to be from a friend.  You should be especially wary of opening any attachments sent through email, unless you have good confidence that they are malware-free.

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Prevent email phishing attacks with real-time link click protection

Thursday, June 20th, 2013

LuxSci’s Premium Email Filtering service, which works with LuxSci-hosted and externally-hosted email, has a little known feature called “Click Protection” which actively protects end users from phishing attacks and malware.

Some of the most common forms of malicious email involve links which:

  • Send you to a “phishing” web site: one which looks like a legitimate site (e.g. Bank of America) but which is not. These sites try to get you to give up personal or financial information for malicious uses. More on phishing and social engineering.
  • Send you to a site infested with malware: sites which include content that downloads viruses, spyware, or other unwanted programs onto your computer without your consent or (sometimes) even your knowledge. All you have to do is click on the link and you could be infected (depending on what security vulnerabilities are currently open on your computer / browser).

These are nasty. Premium Email Filtering (and indeed many filtering solutions) try to detect such emails and links in messages and block the messages outright as malicious. However:

  1. For new threats, some messages may get through to recipients before these web sites are identified as malicious.
  2. The links may point to valid malicious web sites which later, after the emails are successfully delivered to the unsuspecting recipients, are updated to contain malicious content.

So, it is quite possible for email messages with not-yet-malicious or not-yet-known-to-be malicious links to make it through any filtering system and land in your user’s INBOXes, endangering their computers and identities.

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Mac Viruses – The New Reality

Tuesday, June 28th, 2011

Viruses have been the bane of Windows users since before the World Wide Web became popular. If you owned a Mac though, you were generally immune to them. They didn’t targets Macs and still rarely do. But is that changing now that Apple and its products like the iPhone and iPad have become increasingly popular?

Most security experts agree that Apple products are still more secure than Windows, not because of any inherit security differences, but because Apple products are still used by a minority of computer users. While more people are buying Apple computers (which includes iPhones and iPads) it is still a drop in the bucket compared to the number of Windows computers out there. Virus and malware writers still go for the most bang for their buck, so they target Windows — at least up until now.

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