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Fending off DDoS attacks

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DDoS extortion attacks seem to be the new threats to look out for. According to GAD ELKIN of F5 Networks, a hybrid security approach is a company’s best chance of mitigating these attacks.

It is a testament to the sustained evolution of the cybersecurity landscape that we are still regularly seeing the emergence of new threats. Distributed denial of service (DDoS) attacks and ransomware are both well-established methods of cyber-attack, but we have recently seen a new tactic that combines elements of both: DDoS extortion attacks.

From what we’ve seen of the attacks so far, there is an almost professional approach to the whole process; initially, an email will arrive at the target explaining who the attackers are and even linking to some recent blogs written about them and their extortion tactics.

The email goes on to state that unless a fee is paid (usually around 40 Bitcoin but demands can go into the hundreds), a large-scale DDoS attack will be launched. Alternatively, some emails will only arrive after the attack has started, stating that the attack will only be stopped if the ransom is paid, or the severity will be reduced if a portion of the fee is paid.

We’ve monitored some attacks that start slowly and increase in scale – DD4BC, the company behind the extortion, claims it can launch attacks up to 400-500 Gbps.  Such attacks are very rarely that strong, but they are known to last up to 18 hours, however, which is definitely enough time to seriously impact a business.

At this point, it seems that no particular industry is being targeted specifically, but there is one general theme. The targets we’ve seen so far have been those that rely on online transactions to operate, such as financial institutions and currency exchanges.

One endgame to this that we’ve seen is that the extortion element could actually be a diversion tactic, meaning the customer concentrates on the sheer volumetric high-end type of attacks, when the offenders are actually targeting a local application with a different attack vector. This means that hackers could be conducting local application level attacks involving any form of penetration into the application itself. So often the target isn’t actually to bring down or disrupt a website or service but to gain access to an application in order to steal information, whether it’s credentials, financial information, personal data or something else.

It’s understandable that some targets may think the email is junk and ignore it, but that’s not necessarily the best course of action. Of course, that doesn’t mean that paying the ransom is advisable either. That leaves targets with the option of mitigating the attack, despite the emails specifically stating that attempting to mitigate the DDoS attack is pointless. Whilst the protagonists may claim that the attack is too big for even the best technology to cope with, that’s just not true.

Mitigation is possible through a combination of on-premises and cloud-based anti-DDoS technologies. A hybrid approach allows a company to mitigate DDoS attacks that are launched from outside the infrastructure and also cope with local-level attacks targeting the application layer.

A DDoS attack up to 500 Gbps in size can only be stopped with cloud-based technologies. The local network and application level attacks (which will happen if the DDoS is a diversion tactic) has to be stopped with on-premises technologies. So one or the other won’t do; a hybrid approach is the key to protecting your business from the ever-expanding arsenal of the cyber-criminal.

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Welcome to world of 2099

The world of 2099 will be unrecognisable from the world of today, but it can be predicted, says one visionary. ARTHUR GOLDSTUCK met him in Singapore.

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Futuristic structures tower over the landscape. Giant, alien-looking trees light up with dazzling colours amid the hundreds of plant species that grow up their trunks. Cosmetic stores sell their wares via public touch-screens, with products delivered instantly in drawers below the screens.

This is not a vision of the future. It is a sample of Singapore today. But it is also an inkling of the world we may all experience in the future.

Singapore was the venue, last week, of the World Cities Summit, where engineers, politicians, investors and visionaries rubbed shoulders as they talked about the strategies and policies that would enhance urban living in the future.

As part of the Summit, global payment technologies leader Mastercard hosted a small media briefing by one of Singapore’s leading thinkers about the future, Dr Damian Tan, managing director of Vickers Venture Partners. The company’s slogan “We invest in the extraordinary,” offers a small clue to Tan’s perspective.

“We look as far forward as 2099 because, as a venture capital firm, we invest in the long term,” he tells a group of journalists from Africa and the Middle East. “Companies explode in growth because there is value in the future. If there is no growth, they won’t explode.”

The big question that the Smart Cities Summit and Mastercard are trying to help answer is, what will cities look like in the year 2099? Tan can’t give an exact answer, but he offers a framework that helps one approach the question.

“If you want to look at 81 years into the future, and understand the change that will come, you need to double that amount and look into the past. That takes us to 1856. The difference between then and now is the difference you can expect between now and 2099.”

  •    Arthur Goldstuck is founder of World Wide Worx and editor-in-chief of Gadget.co.za. Follow him on Twitter on @art2gee and on YouTube

Use the page links below to continue reading about Tan’s visions.

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Win a Poster Heater with Gadget and Takealot.com

This winter Gadget and Takealot.com are giving away three Poster Heaters, which look like posters but become heaters when you plug them in.

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Three Gadget readers will each win a unit, valued at R550 each. To enter, follow @GadgetZA and @Takealot on Twitter and tell us on the @GadgetZA account how many Watts the heater consumes.

What’s the big deal about these heaters? Many of us are struggling to keep the balance between soaring electricity costs and the need to keep warm this winter.

However, the recently launched Poster Heater by EasyHeat and distributed in South Africa by Takealot.com is not only one of the most cost effective electric heaters currently on the market, it is also easy to setup and use.

As the name indicates, it is a poster similar to one you would hang on a wall. But, plug it in and it turns into a 300 Watt heater. The Poster Heater isn’t designed to heat hallways or large rooms, but rather smaller ones like a bedroom or a baby’s nursery or a dressing room.

It uses radiant heating, which means that it heats up in a couple of minutes and the heat is directed at the objects or people around it, quickly taking the chill out of the air and providing a comfortable ambient temperature.

The other advantage of radiant heating is that it doesn’t dry out the air like infrared or gas heaters. Users also don’t have to worry about their children or pets getting too close to it because, even though it gets hot, it can be touched.

To enter the competition follow the steps below:

Competition entry details:

1. Follow @GadgetZA and @Takealot on Twitter. (We will ONLY be accepting entries via Twitter, so please don’t enter through the comments section of this article.)

2. Tell us on Twitter, via @GadgetZA, mentioning @Takealot in your posting, how many Watts the Poster Heater consumes.

cleardot.gif3. The competition closes on 31 July 2018.

4. Winners will be notified via Twitter on 1 August and Takealot.com will be in touch to organise delivery.

5. The competition is only open to South African residents.

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