Whether securing your business or yourself, the first step is to understand how cybercriminals work.
- Ransomware is a type of malicious software that encrypts files so they can no longer be accessed.
- Cybercriminals hold the user’s files until the owner pays a ransom for their return.
- Business owners and individuals can take proactive steps to identify cyber risks and employ best practices to protect data.
Ransomware has recently become one of the top threats to data stored on company networks and personal computers. For those still unfamiliar with ransomware, it is a type of malicious software (also known as malware) that, when downloaded to a computer, encrypts files so they can no longer be accessed— or it locks down the operating system entirely so the user can no longer access anything.
Cybercriminals will hold the user’s files hostage until the owner pays a ransom— usually several hundred dollars— and often in a secure e-currency, such as bitcoin. In short, ransomware is an easy way for cybercriminals to make money by stealing yours.
Every industry and every individual is at risk of falling victim to a ransomware attack. Tactics used by cybercriminals are increasingly sophisticated and tend to mimic legitimate emails and documents, fooling users into clicking on malicious links or opening malware-laden attachments.
Cybercriminals take advantage of users who may not be aware of these types of risks or who don’t follow security best practices. When it comes to disarming cybercriminals and lowering the ransomware threat, security training and education can go a long way.
As a business owner or an individual, your basic security education should include how to recognize the tricks cybercriminals use to con users into downloading malware, and how to take a proactive approach to preventing data loss.
Some of the most common ransomware tactics
Social engineering is the most popular tactic used to spread ransomware. It focuses on user behaviors and habits, anticipating that users will give in to curiosity. Cybercriminals send links to websites or videos or add attachments that may look legitimate, but are really malware that is then loaded onto the user’s computer. Popular social engineering tactics include the following:
- Phishing. A study by security company PhishMe found that 93 percent of phishing emails now contain ransomware. Recognizing how to tell a phishing email from a legitimate email is one of the best defenses in protecting computer systems from a potential ransomware attack. However, that’s easier said than done – phishing emails are becoming increasingly more targeted and harder to detect. There are still the generic and random phishing scams to watch for—threatening letters from the “IRS” is one popular example of an enduring phishing scam— but, on the whole, users are becoming better at avoiding generic phishing traps. Spearphishing (an email that appears to be from a known or trusted person or business, often directly addressed to a specific user) and whaling (spearphishing emails that target high-profile and/or high-level persons) are more difficult to discern.
The best defense against phishing scams is to always verify the authenticity of the email before opening an attachment or clicking a link. Some tell-tale signs that an email is not authentic include the use of “.exe” in the attachment or link, or odd misspellings and grammatical mistakes. Regardless, the best advice is to verify that the sender of the email is who it claims to be. Do so by sending a new email communication, and not in the form of a reply, for additional security.
- Clickbait. Clickbait is using attention-grabbing headlines to get the reader to click on the link. We’ve all seen them— articles with headlines such as “Father feeds child and you won’t believe what happens next!” Readers are naturally curious and more inclined to click on these types of articles. Cybercriminals know the power of the clickbait headline and tend to use these articles to hide malware. To avoid potential ransomware delivered by clickbait, don’t be tempted to click on these links or, if possible, block the sponsored ad on social media so it doesn’t appear on any feeds.
- Social media. While cybercriminals will use social media as a way to spread ransomware, what they really get from social media is a treasure trove of personal information that can help them develop those targeted, socially engineered attacks. Thanks to user “oversharing” and lax privacy settings, cybercriminals learn critical personal information, such as birthdates, likes and dislikes, vacation habits, favorite sports teams and television shows, and so on— and can then use all of that information to entice users to fall for a targeted attack. The best way to protect yourself on social media is to put security settings on the highest levels and to proactively limit personal details shared.
- Fake “patches” and software updates. Cybercriminals also use drive-by malware— or when malware code is downloaded from a legitimate website without the user’s knowledge— to spread ransomware. What tends to happen is that the user will get a notice that software, a browser, or operating system needs to be patched, and when the user allows the “patch,” ransomware is downloaded instead.
It’s tough to know when a legitimate website has been loaded with malware, but to prevent damage from a drive-by ransomware attack, users should ensure their anti-virus/anti-malware software is up to date. Also, there are ways to check whether a patch is legitimate or malware, such as going to the browser or software help site to see if there is any news about a new patch, doing a quick Internet search to see if there is any news about an update, and setting up applications to automatically download patches and updates.
- Geo-targeting. This is a relatively new tactic used by cybercriminals. Each device has an IP address, which also reveals the device location. This allows hackers to design their attacks based on where the user lives, works, and plays. Cybercriminals use geo-targeting to ensure that their ransomware delivery means (phishing, website, etc.) is translated to the user’s language or uses information that would be known to the user’s country or state. Using IRS phishing emails is a type of geo-targeting, as it focuses on U.S. residents and is usually sent around tax time. To avoid an attack via geo-targeting, users should practice the same caution advised for phishing and fake update tactics: verify, patch, and use updated security software tools.
Even when users recognize the tactics used by cybercriminals and have adopted some of the security practices referenced, ransomware may end up on the system even with the best precautions. If this happens, the FBI advises against paying the ransom because it doesn’t guarantee the information will actually be returned. Instead, the best step against losing important files in a possible ransomware attack is to back up everything to the cloud or an external drive, so that if your computer files are encrypted, nothing is lost.
Protecting your wealth against cyber attack
While cybercriminals see any person or business as a potentially valuable victim, wealthy individuals are highly targeted for ransomware attacks. Because there are more assets available to steal, cybercriminals can demand higher ransoms for data held hostage. Also, those stolen encrypted files are more likely to contain information that is worth even more to cybercriminals: files that could destroy a reputation or intellectual property.
As an affluent individual, you may be highly targeted but you don’t have to be a victim. Here are a few tips to avoid putting your assets at risk:
Watch out for whaling attacks. Whaling emails are often spoofed to look like they are from other high-profile individuals and include information that is of specific interest to the recipient. Even if the recipient is expecting to hear from the sender, it is always safer to verify that the email is legitimate before opening attachments or clicking on links.
Ensure all privacy settings in social network accounts are set to the most private options. Social networks are a data goldmine for cybercriminals. The less information they have access to, the less information they have for targeted attacks.
Do not save personal or financial information in browsers, websites, or social networks. If malware does enter a computer system, that information is readily available to cybercriminals.
Back up everything to an external hard drive that can be unplugged from a computer and stored in a safe place. While cloud backups are more convenient, they are also at risk for the same type of attacks as any computer or network. An external hard drive backup means that the most sensitive information doesn’t have to be stored on the computer’s hard drive, giving it an extra layer of protection if the computer is compromised.
Ransomware will continue to be a top security concern in the coming years because of its ease of use and high profitability. By keeping informed of the latest cybercrime tactics and doing all you can to protect your systems and your personal information, you can do your part to avoid becoming a victim.
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