How NSE Fought 400 Million Cyberattacks in One Day: Inside 'Operation Sindoor' (2025)

The National Stock Exchange (NSE) is under constant siege, facing an astonishing 170 million cyberattacks each day. This unprecedented onslaught has led to the formation of a specialized task force, dubbed the "cyber warriors," who work tirelessly to ensure the smooth functioning of the exchange.

"Every single day, our teams, backed by cutting-edge technology, battle against millions of cyber threats," revealed a senior NSE official. "The scale of these attacks is immense, ranging from 150 to 170 million daily, posing a significant challenge to our defenses."

Recently, a group of journalists from Jammu and Kashmir gained exclusive access to the NSE's inner workings, witnessing the nerve-wracking reality of cyber warfare. The NSE operates two state-of-the-art cyber defense centers, functioning as digital fortresses, equipped with the latest software to neutralize and repel large-scale attacks on the financial market infrastructure, 24/7, 365 days a year.

"Our robust cybersecurity architecture, a harmonious blend of skilled personnel, advanced machines, and innovative technology, ensures the safety and integrity of our operations," the official emphasized.

But here's where it gets controversial... During 'Operation Sindoor,' a simulated DDoS attack, the NSE faced its most intense battle yet, recording a staggering 400 million cyberattacks in a single day - an unprecedented record. Despite the overwhelming odds, the coordinated efforts of personnel, machines, and advanced technology prevented any damage.

A DDoS attack is a formidable force, utilizing multiple sources to flood a server with traffic, aiming to crash or render it inaccessible to legitimate users. This type of attack poses a critical threat to industries like the stock market, which rely on uninterrupted operations.

As a precautionary measure, the NSE temporarily restricted access to its website for foreign users during this period.

Additionally, the Maharashtra Cyber unit identified seven Advanced Persistent Threat (APT) groups responsible for launching over 15 lakh cyberattacks targeting critical infrastructure websites across India, following the Pahalgam terror strike earlier this year. Shockingly, only 150 of these attacks were successful, resulting in a failure rate of 99.99% or an abysmal success rate of 0.01%. The hackers employed various tactics, including malware campaigns, Distributed Denial-of-Service (DDoS) attacks, and GPS spoofing, and even defaced Indian websites.

The NSE leadership emphasized the far-reaching impact of a potential breach, not just on their systems but on everything connected to them, highlighting the devastating ripple effect of digital vulnerabilities across interconnected networks.

Officials warned that the growing global interconnectedness and system complexity have elevated the risk of large-scale cyberattacks, posing a significant threat to financial market stability. They further noted that the potential for low-cost, large-scale cyberattacks on financial market infrastructure remains a major global risk.

So, the question remains: In light of these alarming threats, should we increase funding for cyber defense systems at the NSE?

Poll:

Yes, it's necessary

No, it's unnecessary

What's your take on this critical issue? Share your thoughts in the comments below!

How NSE Fought 400 Million Cyberattacks in One Day: Inside 'Operation Sindoor' (2025)

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