One Article Review
| Source |  AlienVault Blog |
|---|---|
| Identifiant | 1641109 |
| Date de publication | 2020-04-06 12:00:00 (vue: 2020-04-06 13:08:12) |
| Titre | Common focal points of DoS attacks |
| Texte | This blog was written by an independent guest blogger. Is your company at risk of a Denial of Service (DoS) attack? If so, which areas are particularly vulnerable? Think it’s a crazy question? Think again. In 2020, 16 DDoS attacks take place every minute. DoS attacks require fewer resources, and so pose an even greater threat. In this post, we’ll discuss what a DoS attack is and how it differs from a Distributed Denial of Service (DDoS) attack. We’ll then look at one of the latest techniques bad actors use to maximize the impact of their actions. What is a DoS Attack? A DoS attack is pretty much what it sounds like. The bad actors render a device or computer unavailable to authorized users. This is accomplished by interrupting the normal functioning of the item. DoS attacks will flood the target device with requests so that the device becomes overwhelmed. The device’s resources are all used to service these invalid requests. As a result, when a valid request comes along, there are no resources left. What’s the point of these attacks? There could be several reasons to launch a DoS attack. Some reasons include: Business rivalry A dispute against the company To earn a ransom to stop the attack To damage the business. What’s the difference between a DoS and DDoS Attack? Both use the technique of overwhelming the target device. The primary difference is in the number of computers used during the attack. With a DoS attack, just one computer is needed. With a Distributed Denial of Service attack, several machines or bots are used instead. Which form of attack is more effective? You might feel that the DDoS attack is more effective. It’s indeed easier to overwhelm a device or server with requests from more bots rather than fewer. It’s also true that the attack is more likely to be detected and blocked. One computer attacking the system might not have the same brute force, but you don’t always need brute force. Say, for example, that a cashier clones your debit card while you’re paying for your items. She notices that you get a message from your bank whenever you swipe your card. She’d like to shop for as long as possible without you noticing, so she gets a friend to launch a DoS attack on your phone. Her friend might use a buffer overflow attack technique on your phone. This attack uses up all the memory and processing power of your phone. You won’t receive messages or phone calls as a result. This is a simplified example, but it just goes to show that you don’t always need an army for these kinds of attacks. More advanced attacks According to Wired, we’re liable to see more DoS attacks with the Web Services Dynamic Discovery Exploit. This admittedly is a clever exploit and one that becomes more relevant with the Internet of Things expanding. With this attack form, the hacker ignores the primary system. Instead, they target vulnerable devices connected to the same network. These could be devices like printers, CCTV cameras, thermostats, etc. The point is that those devices usually don’t have the same level of protection that a company’s servers have. The hacker spoofs the target IP address and pings the device. The device responds to the legitimate target server and ties up resources. This attack is more difficult to detect than a direct attack because the requests are coming from devices authorized to use the network. Common focal points of DoS attacks DoS attacks fall into one of two basic categories: Flood attacks B |
| Envoyé | Oui |
| Condensat | 2020 able abnormally about accomplished according across actions actors address admittedly advanced advantage again against all along also always amount are areas army attack attacked attacker attacking attacks authorized bad bandwidth bank basic because becomes behavior being better between block blocked blog blogger both bots brute buffer business but calls cameras can card cashier categories: cctv clever clones comes coming common communication company company’s computer computers connected connectivity could crash crawl crazy cyber damage data ddos debit defend defending denial detect detected device device’s devices difference differs difficult direct discovery discuss disk dispute distributed documents don’t dos down during dynamic earlier earn easier easily effective end errors essentially etc even every example excessive exchange expanding exploit fair fall feel fewer final firewall flood focal force form friend from functioning further get gets goes good greater guest hacker halt hard have her here how identify ignores impact include: indeed independent indicators instead internet interrupting invalid isp it’s item items just kinds know latest launch left legitimate level liable like likely load long look machines makes maximize may memory message messages might minute more much nature need needed network normal not notes notice notices noticing now number often one overflow overwhelm overwhelmed overwhelming packets particular particularly patterns paying phone pings place point points pose position possible post power pretty primary printers processing protecting protection question ransom rather reasons receive receiving relatively relevant render request requests require requires resemble resources responds result risk rivalry same say security see seem sending sends server servers service services several she she’d shop show shut simplified single slow slows some sounds space specialized spoke spoofs stop such suspect swipe system take target technique techniques tell than them then thermostats these things think those though threat through ties time times tools true two type unavailable under understand unless use used users uses usually valid vanilla victim vulnerable we’ll we’re web website websites what what’s when whenever which will wired without won’t work written you’re your yourself |
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