We Encounter a Serious Issue

   I just received this voice message on my home phone (landline).

   Here's the text:

   We encounter a serious issue coming out of your computer.  It seems to be someone is trying to hijack your computer and try to steal your personal information.  If it's not fixed right away then your computer will become obsolete and all of your credential information may got compromised.  If you are the one who is using Microsoft Windows in your computer then please call 302-316-9259 or press 1 now to speak with security team now.  Please ignore if we called you by mistake.  Thank you.

   The only serious issue here is that people fall for these scams.  Let's break it down:

• The Voice - who wouldn't believe a bad computer-generated voice?  Seriously though, there are plenty of pre-recorded and generated junk voice messages we get all the time.  My general rule of thumb - ignore them all and erase is your friend.
• Bad Grammar - this is practically a throw-back to the old days of spam.  I've written about this in the past.  Someone willing to get past the bad grammar is more likely to continue on to other poor choices.
• Fear Factor - the message is playing on many people's fear of technology and loss of their personal information.  While we've become almost numb to breach announcements, the idea that there is an attack on our personal home computer is still a scary concept.  Words like "hijack", "steal", "obsolete", and "compromised" invoke fear.
• Call To Action - "if it's not fixed right away...".  For a person who doesn't understand the complex issues of their computer, the call for immediacy further plays upon the fear state.
• Microsoft Windows - what are the odds that if a call was made to any household, someone would be using, or would have used int eh past 24 hours, Microsoft Windows?  I'd guess that's pretty high.
• Politeness - bad voice and grammar aside, the call does say please and thank you.  That further instills a sense of confidence in a person already affected by fear and the call to action.

   As I covered in a past posts, while I did not call the number (and I suspect it's already been disconnected), if I did get through to someone I bet that they would be very helpful!  That is, as long as I was cooperating.  If I was not forthcoming with information, then these kinds of folks often get forceful.

   Obviously, the best course of action is to just have a good laugh and hit delete when you get a message like this.  We also need to assure that less technical, or more vulnerable, people understand the issues and are prepared when the call comes.

   Have you, or someone you know, received a call like this?  What happened?

All Your Bitcoin Are Belong To Us

   If you're old enough... and geeky enough, you may remember this:

   All Your Base Are Belong To Us was one of the famous early internet memes.  You can take a break and read more about it here and here.

   Memes are fun!  But ransomware isn't.  We've talked about ransomware many times in the past.  It's a kind of virus or malware (malicious software).  It's been in the news quite a bit and the healthcare industry has had particular ransomware problems.  And the news will continue after May's "WannaCry" and June's Petya/GoldenEye global attacks.

   Basically, in a ransomware attack, infected computers cause data to be encrypted.  Normally encryption is a good thing, but only when you can also decrypt your data.  In this attack, only the attacker can restore your access to the information, and will do so for a "small consulting fee".

   Payment is typically made using Bitcoin.  Bitcoin has also been in the news.  It is what is called a "crypto-currency".  It's basically an online way to pay for things, kind of like an online debit card where you already have the funds in your account.  The main reason Bitcoin is used for ransomware is that it is fairly anonymous, particularly when compared with traditional credit cards or banking.  It's not completely anonymous - it does protect identity during transactions, but eventually someone may have to turn that bitcoin into other traditional currency.

   With all the ransomware attacks, some organizations are getting bitcoins so that they are ready in case they need to pay ransom!

I'll Cry if I Wanna

   I try not to jump on bandwagons, but with so much coverage and affects of the whole worldwide WannaCry mess, I do have a few things to say.  I have a few different things to cover that you may not have seen elsewhere.

   There's been plenty of media coverage so I'll just give a high level overview of what happened.  Like many other nations, the US National Security Agency (NSA) studies computer flaws and develops ways to attack them.  The Shadow Brokers are a hacker group who started leaking some of these NSA-developed attacks in the second half of 2016.  The April 2017 edition of their leaks included the code that enabled the WannaCry attack.
   The attack that started on Thurs May 11 consisted of two parts.  One would encrypt files so that the owner could not get access to their files (commonly called "CryptoWare").  The other part could get remote access to any vulnerable computer.  This was a very powerful combination and this is the first time we've seen this kind of auto-spreading cryptoware.  Once infected, the victim sees a screen that directs them to pay a ransom in bitcoin - so the whole attack is considered "Ransomware".

   Now, Microsoft did release a patch in March to fix some of these problems, in particular the remote access part.  So no problem, right?  Desktops and laptops are usually easier to patch, and you should always have your home systems set to automatically update.  But servers need more testing to assure that applications continue to work as expected.

   Patching was a critical part of the fix, but there was definitely more to it including things like new anti-virus signatures, whitelisting, intrusion prevention signatures and firewall rules.

Ad Where?

   The first website debuted on Dec. 20, 1990 at CERN in Switzerland.  And less than four years later, the first banner ad.  The idea was simple... if people are reading information on a website, why not hit them with an ad?  Media has traditionally been either for-pay or ad-supported and the model for the web included that.  Of course, back then people had no idea the extent to which other screens like laptops, tablets and smartphones, and binge-watching would displace traditional TV watching.

   And shortly after website ads arrived, so did the malware. Ad-ware, also called "malvertising", was born.

   There are a few different ways website ads can cause problems:

• virus code in the ad itself - so clicking on the ad downloads or executes the malware
• malicious code that executes based on a mouse action - such as clicking on a flash animation or even just moving your mouse over an ad (called a "drive-by download")
• a link in the ad brings you to a different page that can have malware, asks for personal information or exploits your browser to grab information from another tab (kind of like phishing)

   You may ask... why would someone allow a virus in an ad on their site?  That's a great question.   The issue is that most sites don't have a direct relationship with the people creating the ads.  The way it typically works is that sites sell space on their pages to ad brokers, who resell that space either to someone wanting to place an ad, or even to other ad brokers.  And often the ads rotate.  It becomes pretty easy for crooks to insert malware into these ad spaces without detection.

   This led to the creation of ad blockers.  These are programs that work in your browser to block content from the 3rd party ad brokers.  There was a big controversy about this in 2015.  On one hand, websites that offer free content need to have a way to monetize.  On the other hand, web and banner ads are annoying, collect our information, and can contain malware.  Some businesses block ads on corporate systems as a way to cut down on malware... and it works.

   To fight back, some sites block people who block ads!

   And that's where things get interesting.

    Let's look at Forbes.com for example.  Many websites simply show their ads along with each page.  If the ads are blocked, then those parts of the pages just don't load, or show a broken image icon.  But when you go to the Forbes website, you first see a welcome page that counts down until you can click to the main page.  While that is happening, the page loads hundreds of those 3rd party ad sites.

   And earlier this year, the Forbes site was serving malware through ads!

   So there's the bind... allow sites to display their ads, including those full sites that only display if ads are allowed; or open the enterprise to malware!

   But shouldn't the responsibility for this malware be with the website that displays the ads?  Shouldn't they test to make sure there isn't executable code in those ads?  I think so.

   I also understand that sites display content that is worth something and they deserve to be compensated.

   There are some compromises.  Some sites ask you to register to see additional content.  You are "paying" by providing information about yourself that they can sell.  Some sites charge nominal subscription fees (some sites charge high subscription fees!).

   There is perhaps some middle ground with Google Contributor.  With this consumer service you pay a nominal monthly fee.  Then google distributes that to sites based upon your usage patterns.

   What are your thoughts?  Is there a middle ground?  Should consumers have to pay for content?  Do we need to be bombarded with ads?  And who should be responsible when sites serve up malware or malicious links?

Crypto Where?

   It's that scary moment...  You're getting some work done on your computer when you see a dreaded pop-up message:

   CryptoLocker, CryptoWall and other crypto-/ransom-ware has been in the news again (or still?).  This kind of malware attack was first identified in 2013.  Rather than trying to steal information, the malware encrypts your files.  But you don't have the key to decrypt.  The attacker offers, through a pop-up message, to "sell" you the "service" to unlock your files.  To make things worse, the attacker threatens to delete the keys after a set amount of time, typically 72 hours, which could prevent you from recovering the files.

   These ransom-ware viruses are usually sent to your computer as an email attachment.  The attachment can be an office file, pdf, zip file or other file.  The malware can also come from an infected web link.

   When your computer is infected, the virus operates quietly in the background, encrypting files.  You usually won't know there's a problem until the files are encrypted, and then you're in trouble.

   So if you are infected and encrypted... then what?  Well, there's bad news, good news, more bad news and some more potentially good news!

It Wasn't Englebart's Fault! (part 2)

   When we have a post with a "part 1", it probably means we should have a "part 2".  Sometimes other things get in the way!

   A few posts ago we had part 1 of this discussion.  To briefly review, Douglas Englebart was an engineer, inventor and pioneer of the early internet.  He died in 2013.  He was known for a number of key ideas and inventions.  In 1967, he invented a very useful computer device that is a key component in propagating malware and facilitating phishing attacks... the Mouse!

   In part 1 we discussed how malware (malicious software) like viruses get into our computer systems.  Today we'll wrap things up by looking at why it's difficult for our organizations to stop this malware (and why it's difficult to stop this at home).

   Really, the primary issue this stuff is hard to stop is because it's too easy to click on links and attachments.  As we discussed in part 1, as long as we're clicking, we'll have problems.

   But what about anti-virus software?  Anti-virus (or anti-malware or endpoint protection) software has been around for nearly 30 years.  Yet malware problems seem to be getting worse.  (I'll continue to use the term "virus" generically, but I'm really talking about any kind of malware.)

It Wasn't Englebart's Fault! (part 1)

   Douglas Englebart was an engineer, inventor and pioneer of the early internet.  He died in 2013.  He was known for a number of key ideas and inventions.  In 1967, he invented a very useful computer device that is a key component in propagating malware and facilitating phishing attacks... the Mouse!

   Of course, Englebart didn't invent email, email attachments, phishing emails or malicious links.

   The media is always buzzing with information about the latest breach or computer break-in.  We hear about advanced attacks, nation-states and possibility of cyber-war.  Many of these major attacks start with a simple click (or many clicks).

   Two of the main ways that malware is distributed or information is stolen is via:

• malicious attachments sent in an email, and;
• phishing emails with malicious links.

   For either of these methods to work, the recipient of the email needs to click... with a mouse! (well, you could also use a track-pad or track-ball).  The attachment needs to be opened.  If it's a zip file, it needs to be unzip'd.  If it's a link, clicking the link might either download malware or lead to a form asking for personal information.  Any of these actions could cause major problems.

   Let's discuss two issues:

• what do these viruses do?
• why can't my organization stop these? (or why can't I stop them at home?)

   This is, unfortunately, pretty complex and we'll probably handle these in two separate posts.

Why Viruses?

   As I've discussed in the past, this is really an economics issue.  There's illicit money to be made and there are smart people out there coming up with new ways to attack and take over systems.

   A typical computer virus does 1 of 3 things (I'm using the term virus generically - a virus is actually just one of a number of different types of malware (malicious software)).  It can even do more than one of these:

1. connect "home" and download more viruses;
       This is an optional step.  The real goals are items #2 and #3.
2. take over a computer so it can be remotely controlled, or;
       An attacker can take over a bunch of computers and use them to attack other computers or sell that capability to others. The computers taken over are called robots or bots.  They can be used to spread spam and more malware; to send a lot of traffic at target computers so they won't work properly or at all (this is called Denial of Service or DoS), or; might use other attack methods.
3. steal information (the techy word for this is exfiltration).
       The stolen personal or corporate information can be sold or used to steal money from existing or newly created accounts.
4. (bonus item) threaten to do the above (blackmail).
       An attacker might threaten to crash computers if not paid.  One kind of malware called "ransomware" encrypts your files so that only the attacker can decrypt them and charges you a fee to get your access back.

What can we do?

   This is a complex issue and we'll talk about protection methods next time.  For now, the best advice is to take measures we've often discussed here:

• use anti-malware software
• use care when opening attachments
• use care when clicking on links
• know who sent you that email, message, tweet, social network message, etc.

   I discussed these and other steps you can take in a post last year.

When USBs Attack!

   Sometimes it seems that the more things change, the more they stay the same.  In information security, we've known for a long time that if someone can get physical access to your system, there's a chance they can get into your system.  Once an attacker has possession of your computer, laptop, tablet or smartphone, they can take their time and try multiple attacks.  We can take some preventative measures like encryption, but it needs to be implemented well.

   Of course, it's best to keep your portable devices in your possession!  But they do get lost or stolen.

   Unfortunately, there's more than one way for an attacker to physically get to your system.  If you've ever been to a conference, or a state fair, or just about any kind of gathering with give-aways, you've probably seen free USB sticks (also called thumb drives).  These supposedly have programs, games or advertising files.  And they usually do.  But they can also contain viruses or other malware.  To make matters worse, USB systems have an auto-run feature to make (legitimately) running these files "easier".