Malicious email spam volume has increased again. According to the latest figures from Kaspersky Lab, malicious email spam volume in Q3, 2016 reached a two-year high.
In Q3 alone, Kaspersky Lab’s antivirus products identified 73,066,751 malicious email attachments which represents a 37% increase from the previous quarter. Malicious spam email volume has not been at the level seen in Q3 since the start of 2014. Kaspersky Lab’s figures show that six out of ten emails (59.19%) are spam; a rise of around 2% from Q2, 2016. September was the worst month of the year to date, with 61.25% of emails classified as unsolicited spam.
Spam includes a wide range of unsolicited emails including advertising and marketing by genuine companies, although cybercriminals extensively use email to distribute malware such as banking Trojans, keyloggers, and ransomware. The use of the latter has increased considerably throughout the year. In Q3, the majority of malicious emails contained either ransomware or downloaders that are used to install ransomware on personal computers and business networks.
Ransomware is a form of malware that locks files on a computer with powerful encryption, preventing the victim from gaining access to their data. Many ransomware variants are capable of spreading laterally and can encrypt files on other networked computers. All it takes is for one individual in a company to open an infected email attachment or click on a malicious link in an email for ransomware to be downloaded.
Spammers often use major news stories to trick people into opening the messages. The release of the iPhone 7 in Q3 saw spammers take advantage. Spam campaigns attempted to convince people that they had won an iPhone 7. Others offered the latest iPhone at rock bottom prices or offered an iPhone 7 for free in exchange for agreeing to test the device. Regardless of the scam, the purpose of the emails is the same. To infect computers with malware.
There was an increase in malicious email spam volume from India in Q3. India is now the largest source of spam, accounting for 14.02% of spam email volume. Vietnam was second with 11.01%, with the United States in third place, accounting for 8.88% of spam emails sent in the quarter.
Phishing emails also increased considerably in Q3, 2016. Kaspersky Lab identified 37,515,531 phishing emails in the quarter; a 15% increase compared to the Q2.
Business email compromise (BEC) attacks and CEO fraud are on the rise. These scams involve impersonating a CEO or executive and convincing workers in the accounts department to make fraudulent bank transfers or email sensitive data such as employee tax information. Some employees have been fooled into revealing login credentials for corporate bank accounts. Cybercriminals use a range of social engineering techniques to fool end users into opening emails and revealing sensitive information to attackers.
Security awareness training is important to ensure all individuals – from the CEO down – are aware of email-borne threats; although all it takes is for one individual to be fooled by a malicious email for a network to be infected or a fraudulent bank transfer to be made.
The rise in malicious email spam volume in Q3, 2016 shows just how important it is to install an effective spam filter such as SpamTitan.
SpamTitan has been independently tested by VB Bulletin and shown to block 99.97% of spam emails. SpamTitan has also been verified as having a low false positive rate of just 0.03%. Dual antivirus engines (Kaspersky Lab and ClamAV) make SpamTitan highly effective at identifying malicious emails and preventing them from being delivered to end users.
If your end users are still receiving spam emails you should consider switching antispam providers. To find out the difference that SpamTitan can make, contact the Sales Team today and register for a free, no obligation 30-day trial.