In the wake of the COVID-19 global pandemic, online and digital are becoming increasingly important to business. While these trends have many advantages in terms of new ways of working and other aspects, it is also true that cyber attacks (i.e., ransomware and malware) are rapidly increasing to exploit the gaps.
Ransomware attacks are on the rise
A type of cyber attack called "ransomware" is particularly risky at the moment. This attack is a virus that encrypts files on an infected PC and makes them unreadable to the owner(s).
Ransomware attackers demand a "ransom" from their victims. If the ransom is paid, they will unencrypt the files and restore them to their original state.
There are currently many different types of ransomware, such as WannaCry, which came on the scene around 2017. This year, a new ransomware called MAZE has become a global epidemic, and the damage is slowly becoming more noticeable in Japan, as well.
Problems with ransomware countermeasures
The difficulty with ransomware countermeasures can be summed up in two points: the modus operandi has become so sophisticated that it is difficult to prevent infection, and once infected, the probability of regaining access to data is low.
Ransomware is currently the most popular method "chosen" by attackers, and the techniques and methods are evolving every day. Although the main route of infection is through links and attachments in spam e-mails, it is often difficult to guard against the attack because the e-mails look completely normal, for example, identical to ones from trusted business partners.
Also, once infected with ransomware, it is very difficult to recover the encrypted files. Even if you pay the "ransom" demanded by the attackers, there is no guarantee that your data will be restored. Unfortunately, there have been many cases where the ransom was paid in full, but the encryption was not lifted. In the end, the victims had no choice but to give up on the lost data and move on.
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Tsukaeru Cloud Backup+ is a comprehensive solution that integrates a backup function and security measures, regularly backing up all of your PC data to a secure cloud server. In this way, even if your company's local PC is infected with ransomware, all you have to do is restore from the pre-infection files from the cloud.
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With the increase in the number of remote workers, cybersecurity is becoming more and more important. While there are many crucial factors in effective corporate security measures, email security is one of the first areas that should be addressed.
Targeted email attacks are on the rise
Virus and malware infections via email remain the most damaging type of cyber-attack and are continuously evolving. In particular, targeted email attacks are increasing, designed for and aimed at specific individuals and companies.
Targeted email attacks are sophisticated methods to trick employees to click on malware links or attachments sent under the guise of a business partner or customer. Because these emails look just like normal business emails, it is possible that malware can be unknowingly downloaded.
Emotet: a new malware threat
Recently, a new malware similar to targeted email attacks, Emotet, has been on a global rampage since 2019. Like targeted email attacks, the Emotet infection starts when a link or attachment in cleverly crafted spam emails is clicked.
The scary thing about Emotet is that, once activated, it multiplies by attacking the company's network and spreads rapidly.
“Don’t read” and “Don’t open” are no longer enough to maintain email security
One reason behind the spread of Emotet's infection is the speed of its evolution. Every time a file is registered in an antivirus software database, it evolves by changing its file format and other features to become undetectable, creating a dangerous game of cat-and-mouse.
It has also become clear that the techniques for tricking email recipients are becoming more and more sophisticated. These days, many of these emails cannot be identified as spam without a great deal of caution, and the risk of infection cannot be mitigated by vigilance and basic anti-virus software on the recipient's side alone.
Block dangerous emails with Tsukaeru MailBuster!
Tsukaeru MailBuster is the latest solution for dealing with increasingly sophisticated and evolving email attacks. Tsukaeru MailBuster has the following features:
・Completely cloud-based: no need for software installation or updates on individual computers
・Virus blocking rate of 100% and spam blocking rate of 99.98%
・Supports ransomware countermeasures and Office 365
・Unique filtering system, which utilizes learning AI technology, shutting out even unknown threats
・No initial investment required (1,600 yen monthly cost/100 email accounts per domain)
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Tsukaeru MailBuster – click for details
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