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What is Exploit and What are the Types of Exploit?

An exploit is a computer program, piece of software, or a script that takes advantage of an error. Or vulnerability to cause unintended or unforeseen behaviour in software, hardware, or any electronic device.

These behaviours typically include taking control of a system, granting administrator privileges to the intruder. Or launching a denial of service (DoS or DDoS) attack.

Types of Exploit

A remote vulnerability spreads across a network and exploits security breaches without the need for any prior access to the attacking system.

In contrast, a local vulnerability does require that the vulnerable system has to be accessed before, usually to increase privileges for the person who will subsequently execute the exploit.

There are also specific exploits against client applications (those that require contact with a server) that usually originate from modifying the servers to send the exploit to the computer then.

Vulnerabilities against client applications can also require interaction with the user. And, sometimes used in combination with social engineering methods to manipulate victims.

Zero-day Exploits

Zero-Day vulnerabilities (also known as 0-day exploits) are security breaches in the software unknown to the attack time. From that point, the hackers can exploit it to achieve maximum impact on programs, data, additional computers, or an entire network.

Thus, exploits directed against these vulnerabilities called zero-day exploits or zero-day attacks. The more massive the attack and the fewer days that have elapsed since Zero Day. The greater the likelihood that no solution or mitigation has been developing and the more extensive damage may be.

And even after the fix is stable, those first few days, not all software users will have been able to apply it.

The WannaCry case was paradigmatic in this sense: the malware took advantage of a Windows exploit developed by the United States Security Agency. It reveals in the previous weeks by Wikileaks.

In the first days, Microsoft corrected the problem through an update. But, all the computers that had not made the update the following days were still vulnerable.

Hidden Threat

When an exploit is made public, the affected software authors take action. And it fixes the vulnerability often through a patch. And the exploit is rendered unusable. For this reason, some black hat hackers and hackers from military agencies or intelligence services do not publish these incursions but keep them private to continue exploiting them.

Many exploits are ingenuous to provide administrator or superuser access to a system. However, it is also possible for hackers to use several different exploits for this very purpose. First to gain low-level access, than to repeatedly escalate privileges to the highest administrative level (also often called root).

The Everyday Use of Exploits

Criminals often use them to trick their threats into infecting more computers. We have seen this in the latest years with threats that exploited Java and Adobe products’ vulnerabilities.

One example that is hugely castoff to exploit security vulnerabilities is ransomware, also known as the Police Virus. In the successive variants that have appeared since 2011, we have seen criminals use vulnerabilities in Java. And also in Windows 2003 systems to infect systems and request a ransom from users for stored data that this malware encrypts to fail to recover.

Protection Measures

And now, knowing what an exploit is and how it works, we can accept a series of measures to avoid them from using to infect our systems.

Keeping all our applications and systems up to date. Knowing that exploits take advantage of security holes, it is vital to close them as soon as possible. Therefore, it is necessary to maintain an effective update policy to avoid leaving a window of time that attackers can exploit.

Mitigate the effects of possible exploits used against us. It may be that the manufacturer of the vulnerable application or system has not yet released an update that fixes the problem. In this case, we can use tools such as the Enhanced Mitigation Experience Toolkit (EMET) for Windows. It will help prevent your system from getting infect until a definitive solution appears.

Have an advanced security solution such as ESET Smart Security, capable of detecting. And also, blocking exploits designed to exploit web browsers and PDF readers’ vulnerabilities, among others.


The exploits are the order of the day when we talk about new threats and attacks. So, it is essential that they consider and how to protect themselves by applying security measures we have offered in this article. In this way, they will minimize risks and prevent their systems and confidential information from falling into the wrong hands.

Other Resources: Themarkertingpilot

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