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Reporting Spam, Malware and Phishing    

Thursday, November 2nd, 2017

At Stellenbosch University, we encourage our customers to submit potential spam, malware and phishing examples for review. Using these submissions, the CSIRT team can learn from the analysis of these messages. This collectively helps to improve the level of virus and spam detection.

Identifying types of unwanted mail

1.    Malware

Malware or “malicious software” is software designed to damage or execute unwanted actions on a computer system or device.  It can also infect and take over a person’s device turning it into a botnet. This means the cybercriminal gains control over the device and utilises it to distribute malware to other people’s devices and profiles users. Common examples of malware include viruses, worms, Trojan horses, and spyware.

2.    Phishing

Phishing attacks are designed to steal a person’s login and password details so that the cybercriminal can assume control of the victim’s social network, email, and online bank accounts. Seventy percent of internet users choose the same password for almost every web service they use. This is why phishing is so effective, as the criminal, by using the same login details, can access multiple private accounts and manipulate them for their own good. 

3.    Spamming

Spamming is when a cybercriminal sends emails designed to lure a victim into spending money on counterfeit or fake goods. Botnets, such as Rustock, send the majority of spam messages, often advertising pharmaceutical products or security software, which people believe they need to solve security issues which don’t actually exist. 

Submitting Examples

1.    Submitting Spam Examples

 Spam examples must be sent in either.EML or .MSG format as an attachment and must not be forwarded. This ensures the original email can be analysed with its full Internet message headers intact.

 The best way to manually submit a spam example is to:

  1. Create a new message.
  2. Drag and drop the spam email into the new message, so it is added as an attachment.
  3. Send to sysadm@sun.ac.za.

 Alternatively, use the mail application to save the email (usually located under File | Save As) as an .EML or .MSG format to a folder location, and attach the saved file to a new email.

 

2.    Submitting Malware Examples

Files suspected to contain a malicious payload, or have wrongly been identified as a malware can be submitted to csirt@sun.ac.za for analysis. All virus submissions must be compressed (or zipped) into an archive file, and password protected. The CSIRT team will conduct analysis on submitted examples in a sandbox environment to determine whether any malicious payload is present.

 

3.    Submitting Phishing Examples

Phishing examples must be sent in either .EML or .MSG format as an attachment, and should not be forwarded. This ensures that the original email can be analysed with its full Internet message headers intact.

 The best way to manually submit a phishing example is to:

  1. Create a new message.
  2. Drag and drop the spam email into the new message, so it is added as an attachment.
  3. Send the email and attachment to help@sun.ac.za or csirt@sun.ac.za

 Alternatively, use the mail application to save the email (usually located under File | Save As) as an .EML or .MSG format to a folder location, and attach the saved file to a new email.

Learn What It Takes to Refuse the Phishing Bait!

Wednesday, February 1st, 2017

Cybercriminals know the best strategies for gaining access to your institution’s sensitive data. In most cases, it doesn’t involve them rappelling from a ceiling’s skylight and deftly avoiding a laser detection system to hack into your servers; instead, they simply manipulate one staff member or student.

According to IBM’s 2014 Cyber Security Intelligence Index, human error is a factor in 95 percent of security incidents. Following are a few ways to identify various types of social engineering attacks and their telltale signs.

  • Phishing isn’t relegated to just e-mail! Cyber criminals will also launch phishing attacks through phone calls, text messages, or other online messaging applications. Don’t know the sender or caller? Seem too good to be true? It’s probably a phishing attack.
  • Know the signs. Does the e-mail contain a vague salutation, spelling or grammatical errors, an urgent request, and/or an offer that seems impossibly good? Click that delete button.
  • Verify the sender. Check the sender’s e-mail address to make sure it’s legitimate. If it appears that our help desk is asking you to click on a link to increase your mailbox quota, but the sender is “UniversityHelpDesk@yahoo.com,” it’s a phishing message.
  • Don’t be duped by aesthetics. Phishing e-mails often contain convincing logos, links to actual company websites, legitimate phone numbers, and e-mail signatures of actual employees. However, if the message is urging you to take action — especially action such as sending sensitive information, clicking on a link, or downloading an attachment — exercise caution and look for other telltale signs of phishing attacks. Don’t hesitate to contact the company directly; they can verify legitimacy and may not even be aware that their name is being used for fraud.
  • Never, ever share your password. Did we say never? Yup, we mean never.Your password is the key to your identity, your data, and your classmates’ and colleagues’ data. It is for your eyes only. The IT department will never ask you for your password.
  • Avoid opening links and attachments from unknown senders. Get into the habit of typing known URLs into your browser. Don’t open attachments unless you’re expecting a file from someone. Give them a call if you’re suspicious.
  • When you’re not sure, call to verify. Let’s say you receive an e-mail claiming to be from someone you know — a friend, colleague, or even the rector of the university. Cyber criminals often spoof addresses to convince you, then request that you perform an action such as transfer funds or provide sensitive information. If something seems off about the e-mail, call them at a known number listed in the university’s directory to confirm the request.
  • Don’t talk to strangers! Receive a call from someone you don’t know? Are they asking you to provide information or making odd requests? Hang up the phone and report it to the helpdesk.
  • Don’t be tempted by abandoned flash drives. Cyber criminals may leave flash drives lying around for victims to pick up and insert, thereby unknowingly installing malware on their computers. You might be tempted to insert a flash drive only to find out the rightful owner, but be wary — it could be a trap.
  • See someone suspicious? Say something. If you notice someone suspicious walking around or “tailgating” someone else, especially in an off-limits area, call campus safety.

[ARTICLE FROM Educause]

Whatsapp scams

Wednesday, November 23rd, 2016

WhatsApp is a popular communication tool, used by students and personnel every day. On the downside, it provides cyber criminals with another way to convince you to part with your well-earned money and unfortunately it’s usually quite convincing.

WhatsApp scams come in many different forms and are often very convincing. Just make sure that you stay vigilant and don’t fall for anything that seems too good or too worrying to be true. Just because a friend or a family member sends you something, it doesn’t mean that it is safe.

Voucher scams

A message arrives in your WhatsApp from someone who looks like your friend, recommending a deal they’ve found. The messages usually come with a link that actually takes you to another website and tricks you into giving your personal information. Don’t ever click a link you’re not sure of and certainly don’t ever hand over personal information to a website you haven’t checked.

WhatsApp shutting down

There are many fake messages claiming that WhatsApp is going to end unless enough people share a certain message. The messages often look convincing, claiming to come from the CEO or another official. They’re written using the right words and phrases and look like an official statement. Any official statement wouldn’t need users to send it to everyone like a round robin. You would either see it in the news or it’ll come up as a proper notification in the app from the actual WhatsApp team.

WhatsApp threatening to shut down your account

This is very similar to the previous scam. It looks like an official message that claims that people’s WhatsApp accounts are being shut down for being inactive. Sending the message on will prove that it’s actually being used and often instructs people to pass it along.

WhatsApp forcing you to pay

Similar to the previous scam, with the only difference being that the message supposedly exempts you from having to pay for your account – if you send it on to other people.

WhatsApp Gold or WhatsApp Premium

The claim suggests that people pay for or download a special version of WhatsApp, usually called Gold or Premium. It offers a range of exciting-sounding features, like the ability to send more pictures, use new emoji or add extra security features. The problem is that it is far from secure. Downloading the app infects people’s phones with malware that use the phone to send more fake messages at the cost of the original victim.

Emails from WhatsApp

Spam e-mails are bad enough. E-mails plus WhatsApp is even worse. There’s a range of scams out there that send people e-mails that look like they’ve come from WhatsApp, usually looking like a notification for a missed voice call or voicemail. But when you click through, you will end up getting tricked into giving over your information, passphrases etc. Don’t ever click on an e-mail from a questionable sender. WhatsApp doesn’t send you e-mails including information about missed calls or voicemails.

Fake WhatsApp spying apps

Currently, it is not possible to let people spy on other’s conversations on WhatsApp, because it has end-to-end encryption enabled, which ensures that messages can only be read by the phones that send and receive them. These scam apps encourage people to download something that isn’t actually real and force people to pay money for malware, or actually read your chats once they’ve got onto your phone.

Lastly – 

Hopefully, you have  already blocked sharing your WhatsApp details with Facebook (telephone number, name etc. and allowing Facebook to suggest phone contacts as friends) and Facebook will not be able to  make your WhatsApp account accessible to the 13 million South African Facebook users.

There are some details about this controversial policy change by WhatsApp on the following page: http://www.mirror.co.uk/tech/you-can-stop-whatsapp-sharing-8893949

 

[ARTICLE BY DAVID WILES]

 

 

How to avoid spam

Thursday, March 17th, 2016

Spam is unsolicited and often profitable bulk email. Spammers can send millions of emails in a single campaign for very little money. If even one recipient out of 10,000 makes a purchase, the spammer can turn a profit. Unfortunately spam is more than a mere nuisance. It is also used to distribute malware. 

Here are a few tips to prevent your mailbox from being flooded with unwanted, dubious e-mails.

Never make a purchase from an unsolicited email.
By making a purchase, you are funding future spam. Spammers may add your email address to lists to sell to other spammers and you will receive even more junk email. Worse still, you could be the victim of a fraud.

If you do not know the sender of an unsolicited email, delete it.
Spam can contain malware that damages or compromises the computer when the email is opened.

Don’t use the preview mode in your email viewer.
Spammers can track when a message is viewed, even if you don’t click on it. The preview setting effectively opens the email and lets spammers know that you receive their messages. When you check your email, try to decide whether a message is spam on the basis of the subject line only.

Don’t overexpose your email address.
How much online exposure you give your email address is the biggest factor in how much spam you receive. Here are some bad habits that expose your email address to spammers:
– Posting to mailing lists that are archived online
– Submitting your address to online services with questionable privacy practices
– Exposing your address publicly on social networks (Facebook, LinkedIn, etc.)
– Using an easily guessable address based on first name, last name and company
– Not keeping your work and personal email separate

Use the bcc field if you email many people at once.
The bcc or blind carbon copy field hides the list of recipients from other users. If you put the addresses in the To field, spammers may harvest them and add them to mailing lists.

Use one or two secondary email addresses.
If you fill out web registration forms or surveys on sites from which you don’t want further information, use a secondary email address. 

Opt out of further information or offers.
When you fill out forms on websites, look for the checkbox that lets you choose whether to accept further information or offers. Uncheck if you don’t want to receive any more correspondence.

Take note that information below is an extract from the Sophos Threatsaurus, compiled by Sophos, a security software and hardware company.

Tax season = cyber scams

Friday, July 24th, 2015

Only people with an unusual desire for pain and discomfort look forward to a trip to the dentist. The same goes for tax.

Criminals know this and prey on our vulnerability. Every year at this time, e-mails like the one below end up in SU staff inboxes. It informs you that the taxman owes you money and all you have to do to receive it, is to click on a link.

This is a scam, and you should never respond or go to the site or open up the attached file, as this could compromise your banking security.

  1. SARS has your banking details on record and keeps it in secure and encrypted form. They do not need you to confirm or enter your banking details.
  2. SARS will always either SMS or send you a registered letter in the post to inform you of tax returns. They will never contact you by unsecured e-mail.
  3. They also have enough data to address the mail to you PERSONALLY and not via some vague “Dear Taxpayer” or “Good Day” salutation.
  4. There is no EFiling@sars.gov.za address.
  5. The attached file is usually a html (webpage) file and will connect you to a server controlled by the criminals. This server downloads a Trojan virus to your computer that will install software, malware and do all sorts of nasty things to your computer and data. Another tactic is to present you with a “login page” where you enter your banking account details, your PIN code etc.
  6. Unless you have added your university e-mail address as the primary contact address on the SARS system, you should never receive mail on your university account.

This phishing scam will allow the criminals to log into and take control of your bank account via the internet.

They can create themselves as beneficiaries, transfer your money to their account, and then delete the evidence pointing to their account.

These scam e-mails will never stop. It is always difficult to block them too because scammers change their addresses, details and methods on a daily basis. So it is always best to dump these mails in the junk mail folder, blacklist the sending domain and delete the mail immediately.

Why do these criminals continue to send their mail? Because they catch people regularly. In 2012 R14+ million was stolen from South Africans alone using phishing tactics such as this one.

Also read more on this on the mybroadband website.

EXAMPLE OF E-MAIL:

From: SARS eFiling [mailto:eFiling@sars.gov.za]
Sent: Saturday, 27 June 2015 10:14
Subject: Your account has been credited with R3,167.14
efiling

Your account has been credited with R3,167.14

Please click below to accept and verify payment.

Accept Payment

During this process, there will be verifications. If you don’t receive codes on time, come back to finish verification when received

SARS eFiling

[ARTICLE BY DAVID WILES]

 

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