Fortinet points out that while using VPNs is necessary, it does not address the inherent insecurity of simple username/password logins, with MFA required to access critical information and applications. This would eliminate the risk from stolen or weak passwords, preventing hackers from validating credentials and infiltrating the networks.
 
Threats galore

During a recent video call with India, Derek Manky, who is Chief of Security Insights & Global Threat Alliances at Fortinet’s Office of Chief Information Security Officer (CISO), said that though organisations have completed the initial phase of transitioning their entire workforce to remote telework, CISOs face new challenges in maintaining secure teleworker business models.

There has been a significant spike in Covid-19 related threats, with cybercriminals unleashing a surprisingly high volume of new threats to take advantage of inadvertent security gaps as organisations scurry to ensure business continuity.
“An unprecedented number of unprotected users and devices are now online, with one or two people in every home connecting remotely to work through the internet,” mentions Manky.

“Simultaneously there are children at home engaged in remote learning and the entire family is engaged in multi-player games, chatting with friends as well as streaming music and video.” All this has provoked a surge in phishing attacks, with an average of about 600 new phishing campaigns every day.

The phishing attacks range from scams related to helping individuals deposit their stimulus for Covid-19 tests, to providing access to chloroquine and other medicines or medical devices, to providing helpdesk support for new teleworkers. Some even target children, with offers of online games and free movies, or even access to credit cards to buy online games or shop online.

Most of these phishing attacks contain malicious payloads that include ransomware, viruses, remote access trojans (RATs) designed to provide criminals with remote access to endpoint systems, and even remote desktop protocol (RDP) exploits. The first quarter of 2020 has documented a 17, 52 and an alarming 131 per cent increase in viruses for January, February and March respectively, compared to the same period in 2019. This surge is mainly attributed to malicious phishing attachments. Multiple sites that are illegally streaming movies that were still in theatres secretly infect malware to anyone who logs on.

According to Manky, as users are all connected to the home network, attackers have multiple avenues of attack that can be exploited targeting devices, including computers, tablets, gaming and entertainment systems and even online IoT devices such as digital cameras and smart appliances, with the ultimate goal of finding a way back into a corporate network and its valuable digital resources. “If the device of a remote worker can be compromised, it can become a conduit back into the organisation’s core network, enabling the spread of malware to other remote workers,” he explains. “The resulting business disruption can be just as effective as ransomware targeting internal network systems for taking a business offline.”

Manky recommends adopting the same strategy for cyber viruses that we are adopting in the real world today, with cyber social distancing all about recognising risks and maintaining distance. “Isolation is all about segmenting networks and quarantining the malware from spreading across the network,” he points out.