Security Systems

What should you know about the reliability of antivirus software for mobile OSs?

its reliability can vary

What symptom may suggest tracking or spyware activity related to ads?

ads appearing unexpectedly, displaying in the browser, opening persistent pop-ups, or showing a high level of unauthorized personalization

What do fake security warnings try to do?

trick users into installing apps or granting additional permissions to Trojan apps

How can malware cause degraded response time?

run background processes like data collection or cryptomining, leading to excessive power drain and high resource utilization

How can malware cause limited or no Internet connectivity?

corrupt DNS settings or search providers to execute redirection attacks

What can limited or no Internet connectivity from malware lead users to?

spoofed sites

What other signs can malware-related redirection cause?

disrupt access to legitimate sites, trigger certificate warnings, and slow down network performance

How do bootleg or spoofed apps often behave?

like Trojans

What can bootleg or spoofed apps secretly do while appearing functional?

operate as spyware, harvesting data from the device

What may unexpected application behavior look like?

unexpected permission requests or unauthorized use of the camera and microphone

What can high network traffic indicate?

the app is transferring files from the device or the device is compromised

What compromised-device activities can excessive bandwidth usage indicate?

DDoS attacks, mass mailing, or cryptomining

What device feature can alert users to excessive data use?

data usage monitoring and limit triggers

Why should users review the data usage of each app?

to assess its legitimacy

What should happen if data leakage occurs?

all potential source devices must be quarantined and investigated to identify the breach's origin

What alerts may warn users about compromise or unauthorized access?

2-step verification alerts indicating new device access attempts or unexpected password changes

Why can a compromised email account lead to more account compromise?

hackers can infiltrate other accounts lacking secondary authentication

What can breach notification services alert users to?

the misuse of email addresses and account details

What security practice helps protect personal information after breaches?

using unique passwords for different accounts

Why is unauthorized location tracking dangerous?

it can expose sensitive information to third parties

How might rogue apps misuse location data?

for crimes like burglary

How can criminals obtain location information from online photos?

from geotagged online photos

What should users do before posting images online to reduce location risk?

remove geotagging information from images