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Cyber Threats in Nigeria Drop 7.5% in 2021—Kaspersky

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By Adedapo Adesanya

Cyber threats in Nigeria in 2021 depreciated by 7.5 per cent, according to the latest research by Kaspersky.

This dramatic change in the threat landscape is coming at a time regular and self-propagating malware is decreasing dramatically, as it is no longer effective and cannot fly under security radars.

Security researchers at Kaspersky noticed that Kenya recorded the highest decline with an unprecedented 28.6 per cent, while South Africa saw a 12 per cent decrease.

The reason for such a change was the introduction and popularisation of new cybercrime models in the region, with cybercrime tools becoming more targeted along with a long-running trend where malware creators rely not on the technical advantage of their technologies over security protection, but on the human factor.

The cybersecurity firm noted that this has stimulated the evolution of phishing schemes in 2021. In particular, the region saw a wave of ‘Anomalous’ spyware attacks.

The usual phishing spyware attack begins when attackers infect a victim by sending them an e-mail with a malicious attachment or a link to a compromised website and ends when the spyware is downloaded and activated on the victim’s device.

Having gathered all necessary data, the operator usually ends the operation by attempting to leave the infected system unnoticed. In anomalous attacks, however, the victim’s device becomes not only a source of data but also a tool for spyware distribution.

Having access to the victim’s email server, the malware operators use it to send phishing emails from a legitimate company’s email address. In this case, anomalous spyware attacks an organisation’s server for collecting stolen data from another organisation and sending further phishing emails.

Speaking on this, Maria Garnaeva, Senior Security Researcher at Kaspersky ICS CERT team, “The Anomalous spyware attacks have a huge potential for growth in South Africa, Kenya and Nigeria in 2022, because unlike regular spyware the entry-level for attackers who wish to employ this tactic is significantly lower – since instead of paying for their own infrastructure, they abuse and employ the victims’ resources.

“We see that cheaper attack methods have always been on the rise in the region and cybercriminals quickly pick up on new tactics. Kaspersky, therefore, suggests that in the nearest future, these countries should be prepared for such attacks.”

She explained that the mass scale attacks are not disappearing, but rather transforming with the scheme usually following a style where a user searches for a free version of an extremely popular legitimate spyware and the cybercriminals offer them a fake installer using ‘black SEO technic’ – the abuse of the legitimate search engines, resulting in the offering of the fraudulent websites first.

As a result of software installer execution, a few dozen malware samples are downloaded and installed with the goal of turning the infected devices into a part of the Glupteba botnet.

The whole fake installers campaign and botnet have been extremely active in South Africa in 2021 and continue to evolve, yet it is scarcely researched.

“While the Glupteba botnet seems to be a threat for consumers, we are still researching it and keeping an eye on its behaviour, since some distributed malware resembles APT-related samples like Lazarus APT groups and were recently used in the largest DDoS attack in Russia. It is too early to say it with a high level of confidence, but these factors may suggest that we are now entering the era where APT actors start to use existing malware distribution platforms which makes attribution of such attacks harder and opens a new vector similar to supply chain attacks,” added Ms Garnaeva.

Recommendations from Kaspersky

In order to stay protected from such new cybercrime models and threats, Kaspersky recommends the following:

– Pay close attention to and don’t open any suspicious files or attachments received from unknown sources.

– Do not download and install applications from untrusted sources.

– Do not click on any links received from unknown sources and suspicious online .s.

– Create strong passwords and don’t forget to change them regularly.

– Always install updates. Some of them may contain critical security issues fixes.

– Ignore messages asking to disable security systems for office software or antivirus software.

– Use a robust security solution appropriate to your system type and devices, such as Kaspersky Internet Security.

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