Sale of Zero-Day Exploits Declining on the Dark Web

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Zero day in the form of binary code.
The past five years have seen the market for zero-day sellers on the dark web reduce from more than 32 to just three.

In the past, zero-day exploits were very popular across the dark web, but the same is no longer the case as experts revealed that the sellers of the service have reduced by more than 10 times.

According to a recent analysis of zero-day services on the dark web by FireEye, a cyber intelligence firm, there were only three zero-day sellers on the darknet as of 2018.

The figure is meager as compared to 2013 when at least 32 vendors were selling the service, says FireEye Vulnerability and Exploitation Manager Jared Semrau.

Reasons for the Decline

Semrau further went ahead to explain why the number has declined by more than 10 times in a span of just five years.

One of the reasons is that the high number of arrests of individuals using the darknet to sell their products.

The other is that since companies are taking the security of their products seriously, they tend to be more cautious.

Your TOR usage is being watched

Then there are manufacturers and security firms increasing their bug bounty programs in a bid to have more individuals with the requisite skills checking the security of their systems.

The result is that attackers will dwell on identifying vulnerabilities because they are guaranteed a payout in the event they find one.

As an example, platforms such as Zerodium purchase exploits from hackers and at times sells them to the manufactures at a higher cost.

One of the most notorious instances was in 2016 when Zerodium said it was willing to pay up to $1.5 million to anyone who can remotely hack into an iPhone device.

Then in 2017, Zerodium put out a call for Tor browser zero-day exploits, with a $1 million payment in return.

Up to now, Zerodium and other cybersecurity companies are paying handsomely for zero-day exploits driving clients out of darknet markets and in the end, those hackers who would offer the service end up working for cybersecurity firms.

The Zero-Day Market

Zero Day Exploit
In the past, zero-day exploits were very popular across the dark web, but the same is no longer the case as experts revealed that the sellers of the service have reduced by more than 10 times.

Zerodium reveals that most of its clients include government bodies and private companies, especially those operating in finance, technology and defense.

By offering their services, government bodies and law enforcement agencies can compromise devices in the event of an investigation.

On the hand, private entities seek to eliminate weaknesses in their products, hence the reason why they offer a bounty program.

For Zerodium, those interested in selling vulnerabilities can do so depending on the level of sophistication involved.

In some instances, the company has increased their payouts for some exploits which if they have; they can sell it at a higher price.

It also seems that many entities are interested knowing exploits in certain systems that the subscription of the same is about $150,000 per month, according to a paper from MIT researchers published earlier this year.

By subscribing, one will get exclusive access to the zero-day exploits.

Hackers who have also successfully initiated hacks of high magnitudes over the years also tend to offer services of testing systems at a cost since they have proved their capability.

To generalize the whole situation, vulnerabilities are valuable—especially when a large company is involved.

Since such giants have a high motivation to protect their data, which if compromised can lead to reputational and financial damage, they are willing to part with a considerable amount.

How Exploits Work

Immediately after the launch of a hardware or software, hackers dive in to look for weaknesses in the system which they can exploit to their advantage.

The same is the case with almost any existing website offering valuable services.

For a zero-day exploit, the hack on a platform happens on the same day that the attacker has discovered the weakness.

However, if the attacker decides to report the flaw to the company, they can be rewarded handsomely.

So immediately after the company is informed of the flaw, they are quick to correct it.

Depending on the type of system they have created, they can recall the devices by requesting their customers to upgrade the current software to the latest version for security purposes.

What Happens If the Hacker Does Not Report the Weakness?

Computer Hacker.
Immediately after the launch of a hardware or software, hackers dive in to look for weaknesses in the system which they can exploit to their advantage.

After the discovery of the vulnerability by a black hat hacker, the next step is to take advantage of it and compromise the system.

It is this factor that makes organizations, government agencies and other entities suffer the consequences in the event their systems become victim.

Since in most cases, security flaws are not handled instantly; attackers tend to have time to inflict some damage on a system.

This has pushed various parties, such as law enforcement agencies and even cybersecurity firms, to call upon extra caution in handling specific information.

The same parties have also called for additional security measures such as the use of two-factor authentication in a bid to prevent unauthorized access to their systems.



With the urge to know more about everything around us, I am an enthusiast researcher and writer with keen interest in expanding my knowledge in a bid to be well versed. Through writing, I express and share my feelings, ideas, and thoughts for like minded individuals.
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  1. Anonymous

    What is the title of the FireEye report referenced in this article?

  2. Anonymous

    The one that bothers me is the zero day where it promps users to act on a popup. I have seen a number of these on my own system. Also others not as informed as me have lost use of their systems or paid the ransomeware hackers. I have yet to see anything that gets rid of click here for added security for firefox and other browsers. And many other things that the unsuspecting can allow attacks on thier systems. No malware protection stops these fully and this is the problem. Another one is people calling me from not their number.


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