Ransomware: How to Stop It Once and for All

Ransomware: How to Stop It Once and for All

Businesses can effectively close the market for ransomware attacks by implementing these three strategies.

Ransomware attacks are becoming infamous. As I write now, the Petya attack is unfolding. And in May, the world was hit with WannaCry, an attack that affected computers in more than 150 countries. The wormlike virus moved into unprotected Windows servers that didn't contain a critical patch, encrypting files with a ransom of $300 in bitcoin from users. Within its relatively short life span, WannaCry infiltrated more than 100,000 computers, including those in U.K. hospital systems, telecom businesses in Spain, and corporations in Asia.

The scariest part of the attack isn't how many computers it compromised or how many countries it was found in, but rather the fact that older operating systems — many of which are still in wide circulation and use — gave little protection against it.

The virus itself wasn't handcrafted by a single individual, nor was it the brainchild of a group of hackers. It was actually stolen from the National Security Agency. Shortly after reports came in about the theft, Microsoft released a security update to patch the same vulnerability that the WannaCry ransomware — and likely Petya as well — took advantage of.

Ransomware attacks are not new, and they're not going to stop anytime soon. Now that hackers can monetize their actions and make hundreds of thousands of dollars in a few days, they'll continue to look for weak spots in software and corporate security policies to exploit.

Like any other disease, curing this type of virus begins with awareness. It's not enough to just include the one patch that stops the Petya and WannaCry viruses. It's not enough to do the bare minimum. Businesses have to change their mindsets and become aware of their own vulnerabilities. They need to take ownership of them and work to strengthen the places that hackers could potentially exploit.

Owning the Problem

The only real action any business can take to prevent these attacks is to put in place a strategic information security risk management framework to address evolving threats. That means creating policies for backups or finding a new, agile way to control and protect your business information. It requires policies that are made for a specific business, its employees, and its unique environment — taking everything into consideration.

As long as vulnerabilities and opportunities for hacking exist, the ransomware business model will continue to affect thousands of businesses all over the globe. According to the FBI, ransomware attacks quadrupled between 2015 and 2016. And there's no indication that this will slow anytime soon — unless businesses decide to drastically shrink the market by implementing policies to protect themselves.

There are three ways businesses can effectively close the market for ransomware attacks. Some of them are time-consuming, and others are expensive, but the benefits significantly outweigh the risk of having business information stolen by hackers.

1. Implement an upgrade policy.

This is the obvious starting point for many companies. It's relatively easy to implement but could end up being the one thing that saves a business from bankruptcy. When ransomware attackers encrypt files and send their ransom notes, they promise the safe return of data upon a specified payment. But they don't always follow through.

What happens if a business pays the ransom but doesn't receive its data back? The consequences could be catastrophic. Implementing an upgrade policy protects a business's future while simultaneously preventing attacks like Petya and WannaCry by patching software vulnerabilities.

2. Only use supported software.

Today, there is no shortage of free software. There's a reason the phrase "there's an app for that" exists. Businesses will often go find these free or inexpensive products and justify it by exclaiming the cost benefits. However, when that software is then the cause of a malicious attack, the cost benefits don't outweigh the risks.

3. Identify your greatest risk.

Email remains the top attack vector, and ensuring its security should be a top priority. Secure email gateways are a great way to prevent malicious software from entering your network. Those gateways shouldn't rely on only signatures to protect email. Not all malicious attacks can be caught by these signatures. Instead, secure email gateways should look at the content in the email, including URLs and attachments, in addition to signature-based screening.

Ransomware attacks on businesses have far-reaching implications. The only way to stop these attacks is for businesses, nonprofits, and other organizations to work diligently to create policies that make it substantially more difficult for hackers to find vulnerabilities they can exploit.

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