1.Botnet. A botnet (robot and network) is a network of devices infected by an attacker, and then used together to perform tasks such as carrying out DDoS attacks (see below), mining Bitcoins, and spreading spam emails. Nearly any device connected to the internet, including home routers, can be infected and pulled into a botnet without its owner ever noticing.
2.Data breach. A data breach happens when a company’s network is attacked and valuable data is stolen—usually customer log-in credentials, credit card details, and social security numbers. The stolen data can then be abused in myriad ways: held for ransom (see Ransomware below), sold on the darknet, and, of course, used to make purchases. Often hackers try to crack email passwords, then test those log-in details on other popular sites, since many people use the same credentials for multiple accounts—a big no-no.
3.DNS attack. DNS stands for “domain name server,” which uses the name of a any common website to redirect traffic to its own IP address. For instance, you’d expect “google.com” to take you to Google’s IP address. Using a DNS hijack, however, cybercriminals can translate “google.com” to their own IP address, redirecting you to malicious sites where they can collect your information or have you download malware. In an attempt to get you to click on a link, DNS hijacks can also deliver altered search results.
4.DDoS attack. Attackers use DDoS (Distributed Denial of Service) attacks to render a network unavailable. They do this by overwhelming the targeted machine with massive requests from multiple devices. The target suffers a severely clogged bandwidth, and legitimate connections become impossible. These attacks are typically carried out by botnets (see above).
5.Mobile banking Trojans. It looks like your trusted banking app, but that’s just an overlay. Underneath, a mobile banking Trojan tricks you into entering financial credentials and personal information. It can also gain administrative rights to intercept SMS messages, making it possible to record two-factor authentication codes as well.
6.Phishing. Used by cybercriminals to trick people into giving up sensitive information, phishing scams pose as emails from an organization or person you know. There is usually a link or attachment included, which it tries to get you to click so that you’ll unwittingly allow malware to download to your system. Sometimes phishing scams look indistinguishable from the sites they’re imitating, and they attempt to trick you into entering your password info.
7.Ransomware. Ransomware is malware that takes hold of your system and encrypts it, sometimes attacking individual files. Trying to access the encrypted files triggers a note that claims you are locked out until you make a payment (more than $600, on average). The messages sometimes appear to be from an official government agency accusing you of committing a cyber crime, which scares many into paying the ransom. Payment is often demanded in Bitcoins.
8.Spyware. Spyware is malware used by hackers to spy on you, so they can access personal information, banking account details, online activity, and anything else they may find valuable. On mobile devices, spyware can know your whereabouts, read your text messages, redirect calls, and much more.
9.Open Wi-Fi. Encrypted connections protect you. Open Wi-Fi networks are unencrypted, which is why they’re risky. Anyone can create a fake hotspot and trick your device into joining it automatically. When you use open Wi-Fi without protection like a VPN (see tips below), anyone on that network can see the sites you visit, your log-in passwords, your financial and personal data, and more. Hackers often name their phony Wi-Fi networks after popular spots (like “Starbucks”), knowing that most devices automatically rejoin hotspots they’ve used in the past. Hackers can even redirect your unencrypted traffic, sending you to malicious sites.
Mitigate of attacks –
1.Install solid security software on every device.Use strong Anti Virus or strong forewall(IPs) to prevents malware from infecting your device, and also provides Wi-Fi Inspector, which scans your home router for vulnerabilities. All paid versions of Antivirus or only IPs firewalls feature Real Site, ensuring you reach the actual websites you want to visit, and prevents hijacking, thanks to an encrypted connection between your web browser and Anti-Virus own DNS server.
Use strong and unique passwords. To generate hyper-secure passwords, use a free password manager, like Intel password saver, which comes free with extra protection and lots of features . It also alerts you if your email address may have been included in a data breach so you can take action
Only download apps only from trusted sources. Also, use a smartphone antivirus like NOD32 or Quick Heal, which blocks Trojans from entering and removes any that already have.
Employ a virtual private network (VPN) if you plan to take advantage of free, open hotspots. A VPN—such as Cyber Ghost VPN creates a secure, encrypted connection, protects your personal data and your privacy. With VPNs, you browse anonymously and your location is changed, helping to keep you from being tracked.
Think twice before opening attachments, following links, or sharing sensitive info. Look closely at any email asking you for personal information. If you see a typo or incorrect logo, or anything that puts you in doubt, contact the sender (using a method other than replying to the email) to verify the contents before taking any action.
To prevent ransomware from attacking your system, look into security software like Windows Defender, Symantec, NOD32, Quick Heal etc now with Ransomware Shield, which can be installed on all of your PCs..