Cybersecurity, aka computer security, safeguards information systems, hardware, software, and the data within from theft or damage. Think of it like an online bodyguard. It's crucial today as our reliance on computers and the internet skyrockets.

• Phishing: One of the biggest cyber threats out there, like a sneaky pickpocket. Hackers trick you into giving them sensitive information - usernames, passwords, or even your credit card details! Yikes!

• Targeted systems: Big organizations, government bodies, military computer systems, airline carriers - basically, anyone with a lot of valuable data is a potential target.

• Firewalls: The bouncers of the internet. They block unwanted access to internal network systems and help to filter out various types of cyber attacks.

Real world example: Remember when 35 Russian diplomats were kicked out by then-US president Barack Obama in 2016? That was over allegations of cyber-attacks on political organizations, allegedly trying to tilt the US election in favor of Donald Trump. Goes to show how seriously nations take these cyber threats!

An e-passport is like your regular passport, but smarter! It has a computer chip that carries the owner's data. This can make things like checking in at airports or clearing border control a breeze.

• Advantages: Fast checking and border clearance, increased security (harder to forge), and potential crime detection (some carry your fingerprints!). Lose your passport? No problem! Your details should be retrievable from a database.

• Disadvantages: If stolen, your personal data could be misused. It's also possible, though difficult, for hackers to alter the data. Plus, you can't access your own data, which is a bummer.

Real world example: Consider if you lost your passport in a foreign country (scary, right?). With an e-passport, the information can be retrieved from a database, making the situation a lot less daunting!