The term "cyberjack" isn’t a formal term in cybersecurity, but if you mean hijacking or taking control of modern airplanes via cyberattacks, here’s the gist:

Modern airplanes rely heavily on computerized systems and networks, including avionics, autopilot, communication, and navigation systems. While these systems are designed with strong security layers and isolation (called air-gapping) to prevent external interference, no system is 100% invulnerable.

Theoretically, vulnerabilities could exist—especially through:

• Ground infrastructure (like air traffic control systems or maintenance networks).
• In-flight Wi-Fi systems or entertainment networks, which might be less secure and could provide a pathway if poorly segregated.
• Supply chain attacks or insider threats affecting software or hardware components.

However, direct remote cyber hijacking of a commercial airplane’s critical flight systems is currently considered highly difficult and practically improbable due to multiple layers of security, regulatory requirements, and strict certifications.

That said, security researchers have demonstrated some theoretical exploits in lab settings or simulations, highlighting the need for constant vigilance and improvement.

In short: It’s not impossible in theory, but real-world risks are minimized by rigorous safeguards, and no confirmed case of cyber hijacking a commercial airplane exists so far.

This was already done 10-15 years ago. On board the plane through the multimedia system and from the surface of the ocean, under the observation of FBI agents.

any thoughts on

Would it be legal to shoot an EMP at the sky or aim it at a plane?

While an EMP (electromagnetic pulse) gun could theoretically be used to bring down aircraft, its effectiveness and practicality are highly debated. EMP weapons are designed to disrupt electronic systems, and while they could potentially disable a drone's or even a small aircraft's systems, the potential for collateral damage and the specific vulnerabilities of different aircraft types make it a complex issue. Large aircraft, especially those with robust electronic systems, might be less susceptible to EMP effects.

Here's a more detailed explanation:

• How EMP weapons work:EMP weapons generate a powerful electromagnetic pulse that can interfere with or damage electronic circuits. This can disable or disrupt the operation of drones and other electronic devices.
• Drones vs. Aircraft:Drones, especially smaller ones, often rely on more basic electronic systems that might be more vulnerable to EMP effects. Larger aircraft, particularly those with advanced electronic systems, might be more resilient

Air Force surveys industry for technologies in EMP electromagnetic weapons to counter unmanned aircraft

https://www.militaryaerospace.com/power/article/14302521/emp-unmanned-electromagnetic-weapons

What Happened in AI 171 Aircraft was it's power source completely went out of energy may be some kind of EMP weapon can do that ?

Vladimir is correct. So, the answer is YES, it can be done.

Zapping plane is one thing, I came to know about a case study where they were zapping scientists & engineers. I don't know whether it is possible or not.

I like to mention that case study below, the world is getting dangerous

Turkey: Telepathy 'linked to deaths'

Telepathy could have been used to compel four young Turkish engineers to kill themselves, it's been suggested.

That's one explanation of the deaths of four workers at the defence giant Aselsan contained in a report presented to the PM Recep Tayyip Erdogan, according to reports. All four deaths, within the space of 14 months during 2006 and 2007, were initially recorded as suicides. The men had been undergoing psychological treatment before they died but doubts persisted from their sceptical families, reports newspaper Today's Zaman, external. And last year the Inspection Board of the Prime Ministry launched a fresh probe.

Included in its report was a study by a neuropsychologist, Nevzat Tarhan, who asks prosecutors not to disregard the possibility of telepathy causing severe distress and headaches in the victims, giving them a tendency to kill themselves, reports Hurriyet Daily News, external. Brainwaves could have been sent from 1.5km (just under a mile) away, Hurriyet quotes Tarhan as saying. The report apparently doesn't offer a clear answer as to whether the deaths were murder or suicide but it's been submitted to the Ankara Chief Prosecutor's Office for further investigation.

https://www.bbc.com/news/blogs-news-from-elsewhere-23590756

Nevzat Tarhan

Kaşif Nevzat Tarhan (born 7 July 1952) is a Turkish psychiatrist and Psychological warfare expert and neuropsychology expert

https://en.wikipedia.org/wiki/Nevzat_Tarhan