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CompTIA A+ 1002 > 3) Malware Removal & Mobile OS > Flashcards

3) Malware Removal & Mobile OS Flashcards

1
Q

Malware Removal Procedures: Pneumonic

A

I Question Dad’s Reasons Some Early Evenings

Identify
Quarantine
Disable
Remediate
Scan
Enable
Educate
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2
Q

Malware Removal: Step 1

A

Identify & research malware symptoms

Odd errors, app failures, slow performance, slow boot

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3
Q

Malware Removal: Step 2

A

Quarantine infected systems

Disconnect from network, keep it self-contained
Isolate all removable media
Don’t transfer files or try to backup

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4
Q

Malware Removal: Step 3

A

Disable system restore (Windows)
Restore points automatically created before software installation.

Malware may infect your restore points.
Disable system protection.
Delete all restore points.

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5
Q

Malware Removal: Step 4

A

Remediate infected systems

Update the anti-malware software
Scan & use removal techniques
(safe mode, preinstallation environment)

Install anti-malware on another computer & put on removable drive. Do not plug back into an uninfected computer.

You may be able to get a stand-alone removal app for the specific malware infection.

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6
Q

Malware Removal: Step 5

A

Schedule scans & run updates
Should be built into the anti-malware/antivirus software
If not auto updates, use task scheduler
Check for OS updates

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7
Q

Malware Removal: Step 6

A

Enable system restore & create restore point (Windows)
Only turn back on once computer is cleaned.
Create a restore point.

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8
Q

Malware Removal: Step 7

A 
Educate the end user
One-on-one personal training
Posters/signs
Message board posting
Login message
Intranet page
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9
Q

Mobile OS Troubleshoot: Dim display

A

Adjust brightness level

If that doesn’t work, backlight issue - Replace

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10
Q

Mobile OS Troubleshoot: Intermittent wireless

A

Move closer to access point

Or try a different access point

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11
Q

Mobile OS Troubleshoot: No wireless connectivity

A

Check/enable WiFi
Check security key configuration
Hard reset can restart wireless subsystem

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12
Q

Mobile OS Troubleshoot: No bluetooth connectivity

A

Check/enable Bluetooth
Check/Pair Bluetooth component
Hard reset to restart Bluetooth subsystem
Clear Bluetooth cache

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13
Q

Mobile OS Troubleshoot: Cannot broadcast to external monitor

A

Check app requirements
All devices must be on same wireless network

Signal strength is important too
Between Phone-TV
Between TV-Internet

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14
Q

Mobile OS Troubleshoot: Touchscreen non-responsive

A

iOS - Restart
or hold down power and Home/Volume for 10 sec

Android:
Remove battery, put back in, power on
Hold down power/volume until restart

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15
Q

Mobile OS Troubleshoot: Apps not loading

A 
Restart the phone
Stop the app & restart
Update the app
Reinstall the app
Contact the developer
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16
Q

Mobile OS Troubleshoot: Unable to decrypt email

A

Protect your email (encrypted channels)
Each user has a private key (can’t decrypt without)

Corporate setting: Use MDM to install individual private keys on each mobile device

17
Q

Mobile OS Troubleshoot: Extremely short battery life

A

Bad reception; always searching for signal
Airplane mode on the ground

Disable unnecessary features
(802.11, Bluetooth, GPS)

Check application battery usage
Could be aging battery

18
Q

Mobile OS Troubleshoot: Overheating

A

Phone will automatically shut down to avoid damage

Can create heat:
Charging/discharging the battery, CPU usage, display light

Check app CPU usage
Avoid direct sunlight

19
Q

Mobile OS Troubleshoot: Frozen system

A

No screen/button response, nothing works
Try a soft reset

May require a hard reset

Constantly freezing? Factory reset

20
Q

Mobile OS Troubleshoot: No sound from speakers

A

Check volume settings for device/app
Try headphones
If with an application, try restarting/reinstalling

Sound starts/stops: Dueling apps, keep app in foreground

No sound at all: try software update or factory reset

21
Q

Mobile OS Troubleshoot: Inaccurate touch screen response

A

Close some apps
Low memory can cause resource contention

Restart the device (soft/hard)

May require a hardware fix (digitizer)

22
Q

Mobile OS Troubleshoot: System lockout

A

Too many incorrect unlock attempts

iOS: 10 failed attempts; erases everything
Can disable, but delays increase with failed attempts

Android: locks or wipes after failed attempts
Need Google login to unlock

23
Q

Mobile OS Troubleshoot: App log errors

A

Most log info is hidden - Activate developer tools
May take a bit of research to decipher logs

iOS: Xcode
Android: Logcat

24
Q

Mobile OS Troubleshoot: Signal drop/weak signal

A

Location is everything
Make sure you’re connected to a trusted network

If you absolutely need public WiFi, use a VPN, but don’t trust public networks
Tether with your own device

Run a speed test

25
Q

Mobile OS Troubleshoot: Power drain

A

Heavy app use
Increased network activity
High resource utilization
DoS

Check app before install (use an app scanner)
Force stop running apps

Run anti-malware or perform factory reset

26
Q

Mobile OS Troubleshoot: Slow data speeds

A

Unusual network activity
Unintended WiFi connections

Run a WiFi analyzer
Are you on a trusted network?

Run speed test
Cell tower analyzer - check how much data is being sent

27
Q

Mobile OS Troubleshoot: Unintended Bluetooth pairing

A

Don’t connect to an unknown device
Remove the Bluetooth device
Disable Bluetooth radio
Run anti-malware scan

28
Q

Mobile OS Troubleshoot: Leaked personal data

A

Unauthorized account access
Leaked personal files/data

Determine cause of data breach

App scan, anti-malware scan
Check online data sources (cloud)
Change passwords

Factory reset/clean install

29
Q

Mobile OS Troubleshoot: Unauthorized location tracking

A

Run an anti-malware scan
Check apps with an offline app scanner

Factory reset
Restore from known-good backup

30
Q

Mobile OS Troubleshoot: Unauthorized camera/microphone activation

A

Third party app captures intimate info
Turn off app access
Run anti-malware scan
Confirm loaded apps are legit

Factory reset

CompTIA A+ 1002 (13 decks)

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