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It’s Black Friday: Do you know who is DDoSing your servers? And how to stop them
Today is Black Friday in the U.S. a retail holiday where numerous, extravagant deals are revealed to a ravenous public. In the brick and mortar universe, this can become a free-for-all when shoppers will camp out for days in front of a store just to get in on the first deals. In the cyber universe the same greatly increase traffic can be seen and this also makes it hunting season for hackers and extortionists attempting to get a cut.
On the Internet, the easiest and lowest form of disruption is the distributed denial of service (DDoS) attack and we've seen it employed throughout the year by for various reasons to take down websites.
To get a better understanding of what e-retailers can expect now on Black Friday and the upcoming Cyber Monday, SiliconANGLE reached out to Nexusguard (Nexusguard Limited), DDoS protection experts, and spoke with their Chief Scientist Terrence Gareau.
"Risk from cyberattack is a trend repeating every year," says Gareau. "No doubt retailers all experience an uptick in attacks [during Black Friday]. Attackers are definitely taking advantage of the uptick and e-tailers need to put in more resources to boost their websites' security."
This year DDoS attacks hit record highs, according to the State of the Internet report from Akamai for Q2 2015. The number of attacks grew by 132 percent compared to the same time in 2014 and 12 attacks occurred that exceeded 1,000 gigabits per second (Gbps). Nexusguard's own overwatch on DDoS showed that during 2015 Q3 attack numbers rose by 53 percent over Q2, higher than any quarter over the past two years.
E-commerce at more risk than ever from DDoS attacks
Most DDoS attacks that make it to the news are being done my Internet mayhem groups looking for fame and attention. The most recent example is the attack committed by Lizard Squad on Christmas Day, December 26, 2014 against the Xbox LIVE and PlayStation networks that knocked the gaming services offline for millions of customers However, Gareau says that not all DDoS attacks come from people seeking attention—some are seeded with greed and extortion. Especially when it comes to the lesser-known attacks that services and e-retailers suffer around this time of year.
When asked if competitors might use DDoS to knock out or weaken sales from other e-retailers, Nexusguard's chief scientist would only say that it does appear that competitors do attack each other this time of year.
That said, more danger appears to be coming from extortion rackets this time of year than from greedy competitors. The usual strategy is to hit an outlet with a DDoS attack (a short one) and then send an e-mail requesting some sort of ransom payment or the attack comes back. A few more blasts might come along to get the target's attention.
"Hackers are aware that the holidays are a prime time for online retailers. Therefore, they would do anything to break through any defenses," says Gareau.
This time of year criminals know that stores and e-retailers are looking to make as much money as possible off traffic. As well, increased traffic makes servers even more vulnerable to DDoS because it means they're already working at capacity. Attackers see this as low-hanging fruit because first it's easier and second an e-retailer will lose a great deal of money for even ten minutes of time offline during the sales rush.
"One of the most sophisticated attacks focused on the login prompt," Gareau adds, when asked for an example of how hackers attempt to knock sites offline. "In fact, on Thanksgiving and Christmas last year, we saw a hacker craft specific requests to the login form, preventing visitors from logging on."
Cold advice about DDoS extortion: "…don't f**ing pay 'em."
"We expect to see an increase in fraud and extortion, directly linked to DDoS as seen over the last few years," Gareau says.
When it comes to handling the potential of (or ongoing) DDoS attacks, Gareau suggests getting a proper team on board, he works for such a team at Nexusguard after all, but he also has an opinion on extortion and it's a very simple one:
"…And don't f**ing pay 'em," he adds.
This year has a perfect example of why paying DDoS extortion is a losing bet. In early November Switzerland-based ProtonMail, a provider of end-to-end encrypted e-mail, was struck by a powerful DDoS attack and the attackers demanded a ransom of $6,000 to relent. (The amount requested was 15 bitcoins, which at the time came out to approximately $5,850.)
ProtonMail paid the ransom but then paid the price: the ProtonMail website and service were washed away by a DDoS attack anyway.
Paying extortion to make a DDoS attacker go away does not necessarily make them go away. Just like any other criminal enterprise, knowing that a payment will come is a good way to make sure they will come back. Worse, it will fund the criminals to build out or increase their total power, which means they can go after other targets more frequently.
In many cases that ransom requested by the criminals behind the DDoS could be paid to an anti-DDoS outfit and used to lessen the impact of the attack. The result is that the criminals get nothing but time wasted firing off their attack tools.