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139
votes
23answers
38k views

Is there a quick way to lock my Mac?

On Windows you can hit the keys Windows+L to lock your computer if you step away. I don't want to have to remember if sleep currently asks for a password, if there is a time out where my screen isn't ...
21
votes
3answers
80k views

How can I get admin access to a Mac without knowing the current password?

My Father died last year and I inherited his Mac Mini. My wife has retired and we are trying to set up the mini for her use but the changes we want to make require admin access and we do not have the ...
349
votes
7answers
261k views

How do I recompile Bash to avoid Shellshock (the remote exploit CVE-2014-6271 and CVE-2014-7169)?

Given that Bash 3.2 (the version shipped by OS X) is vulnerable to the remote execution exploit known as "Shell Shock" (CVE-2014-6271 and CVE-2014-7169) how do I rebuild Bash and secure my system ...
7
votes
3answers
54k views

How secure is Activation Lock on iOS 7 (and later)?

Apple showed this new feature in iOS 7 called Activation Lock, that if you enable "Find My iPhone" on a device that is lost or stolen, a person that finds/gets the iPhone will not be able to wipe it ...
39
votes
5answers
1.3m views

Is there any way to view saved wifi passwords on the iPhone?

I've previously connected to a wifi network on my iPhone but I've no way of finding out the password. So is there any way to view saved wifi passwords on the iPhone?
39
votes
11answers
2k views

Is it generally advisable to get anti-virus software for Mac OS X?

Is it worth to buy an anti-virus software for Mac OS X? I heard both opinions like "it's not possible to get a virus on Mac OS X" and "Mac OS X is also vulnerable against virus... " Which is true? ...
17
votes
10answers
51k views

Is there a way to password protect individual apps?

Is it possible to password protect a specific Mac application? For example, I am interested in protecting Mail because even if you cannot retrieve new emails, you still can read all the already ...
4
votes
4answers
22k views

How can I tell if my iOS device is currently jailbroken?

How can I find out if my iOS device has been jailbroken (with a drive-by exploit for example)? Is there an app for that?
14
votes
6answers
4k views

Keychain won't let copy passwords after 10.11.1 update

After the 10.11.1 update, I can not get access to some of encrypted data stored in my keychains with Keychain Access.app. Most notably, I can not see or copy passwords stored. Normally, to do so, ...
28
votes
3answers
11k views

How to securely erase an SSD drive?

I'm pretty new to SSD technology, so I don't know how it compares to hard drives when it comes to securely erasing the drive. Is it enough to run Disk Utility and erase the drive with the option ...
42
votes
6answers
135k views

How can I open a .pkg file manually?

Some applications come in .pkg files, and ask for you administrator password, even if all they do is copy the binary to /Applications. I like to have my applications in ~/Applications, and I do not ...
12
votes
11answers
46k views

Can I trust Apple Store's employees with my laptop?

This might be a bizarre but crucial question, can I fully trust leaving my laptop in repairs (Genius Bar) while they have full access to it ? I recently went to the genius bar to get my display ...
9
votes
6answers
81k views

How to completely disassociate iMessage from my device?

I have an older iPhone that I was thinking about selling soon in order to get a new one. I've set up iMessaging on the device. Normally I would just erase the phone a couple of times and be done with ...
2
votes
2answers
2k views

Software was blocked from opening because it is not from an identified developer

I went to run LibreOffice on my OS X 10.9 and it would not let me install it. It said it was from an unidentified developer. I'm aware of the security features of the Mac and went to System ...
52
votes
5answers
28k views

Are Macs vulnerable to the Bash shellshock bug?

Red Hat recently announced a major security-related bug in the Bash shell. Some are calling it the "shellshock" bug. Since OS X is built off of Unix, is it vulnerable to attacks that exploit this bug? ...
15
votes
6answers
51k views

Is it possible to update any iOS 6 device to iOS 6.1.6?

Apple have just released software updates to fix a rather serious security problem where a valid SSL response wasn't checked properly to ensure it matches the site actually being browsed. I have an ...
2
votes
1answer
4k views

I can't find a setting to disable WINS in Network settings

In my Network settings under WINS I have the NetBios name (elly) that I would like to disable (kill). The message shows that the "elly"is currently been used ? By whom, for what ? There a bunch of ...
8
votes
1answer
8k views

List failed login attempts on Mavericks

I want to see if somebody has tried to log in on my computer, which is running Mavericks. I am primarily interested in tracking ssh log in attempts, as well as tracking people physically typing ...
11
votes
3answers
2k views

Hard wired link between webcam and led indicator?

In light of stories about stories about secret monitoring over laptop webcams (such as this one or this one), I wonder about the reliability of the green LED next to the camera that indicates that ...
2
votes
2answers
658 views

OS X is repeatedly asking for login keychain password

I know this has been asked here several times, but I already checked the other discussions and tried their suggestions, but without success. Is there anything I can do instead of re-installing the ...
79
votes
2answers
91k views

How to upgrade OpenSSL in OS X?

Today the heartbleed OpenSSL exploit was announced in the wild, which allows an attacker to surreptitiously detect and steal private server keys (allowing them to MitM and decrypt your encrypted data ...
14
votes
4answers
2k views

Tools to compress and encrypt files

I want to compress several files and encrypt them with a password if possible. Are there any build-in tools in Mac OS that provide such functionality? If not, can you recommend me a (freeware) ...
31
votes
5answers
3k views

Is my Mac infected with the Flashback trojan?

I own a 2011 model of MacBook Pro with a Core i7 processor and Snow Leopard. I have found out there is a trojan horse which now controls 600,000 Macs. How can I find out if my MacBook is being ...
20
votes
7answers
1k views

How to limit my Mac's exposure to malware?

With OS X malware increasingly in the news (see the Flashback Trojan issue), is there anything that I should do to increase the security of my Mac and reduce my exposure to malware? What I'm doing ...
12
votes
3answers
542 views

What are the risks of connecting a MacBook to an insecure wireless network?

What privacy and security risks am I exposing myself to when I connect my MacBook to an open insecure wireless network? Are there any risks that are worse or better when compared to a Windows PC ...
5
votes
1answer
2k views

Is the Guest account a security risk with full disk encryption on Mountain Lion?

I have File Vault 2 full-disk encryption enabled on my 2012 MacBook Air running Mountain Lion. By default it also has a "Guest" Safari-only account available. I just tried it the other day and found ...
2
votes
4answers
1k views

Steps to be done before selling your iPhone

I was curious about the things that we need to do before selling your iPhone or even before giving it back to Apple (Apple has a program where they will refund you some money if you want to get a new ...
0
votes
1answer
434 views

Can I use an encrypted disk image for my home folder?

At work, several people use my machine. Can I set my home folder to be inside an ecrypted disk image? How would it work as far as mounting/unmounting whenever I log in/out?
12
votes
4answers
71k views

How do you remove SSL certificate exceptions on iOS?

When connecting to a URL via HTTPS and the SSL certificate doesn't match (such as at a paid Wi-Fi hotspot), iOS shows a dialog asking whether the certificate should be accepted. If you accept the ...
13
votes
2answers
5k views

What user behavior is necessary to make Filevault 2 maximally secure?

Situation: Filevault 2 passwords can be stolen Passware has released the Passware Kit Forensic 11.3 which is able to steal the FileVault 2 password from the RAM by performing a DMA Attack via the ...
12
votes
2answers
3k views

Mail on OS X: Choose which X.509 certificate to use for signing mails

I've got multiple X.509 certificates from different CA's for different purposes -- for example, one from CAcert.org, and another one from my university. Both have different advantages and ...
13
votes
4answers
83k views

Which free alternatives to Little Snitch can I use to block internet traffic per applications?

Little Snitch can block internet traffic of a particular app. Can I do something similar without (paying) Little Snitch, either by using free alternatives or configuring the OS X firewall directly?
11
votes
3answers
772 views

Can the built-in OS X “Location” feature auto select locations based on wireless networks?

My home network is very secure, but my school's wireless network is open, which makes it vulnerable to wireless sniffing (e.g. with Firesheep). I just discovered the Location feature and I think it's ...
7
votes
2answers
1k views

“Airplane Mode” in OS X. Alternative command for `rfkill`?

This question is an exact duplicate of this post from superuser.exchange.com. I believe this is a valid question for both of sites and hope I am not (if any) violating stackexchange policies. ...
9
votes
3answers
6k views

Disabling NTP on OS X Lion or older

Following a new security vulnerability in the Network Time Protocol software package, Apple has provided a software update for Mountain Lion and newer versions of OS X. As usual, the older versions ...
9
votes
2answers
2k views

How should I use VPN on a Mac to prevent compromise before the VPN starts?

As most experienced users will have heard, using a Mac in a public untrusted Wi-Fi can be potentially harmful. A tool like Firesheep1 has made it very easy to intercept unencrypted communication. ...
7
votes
2answers
3k views

Can I block ports and network traffic when using Personal Hotspot?

I would like to block ports and network traffic when using my jailbroken iOS device as a Personal Hotspot. The reason is I don't want my backup program, computer updates, or any high bandwidth usage ...
6
votes
2answers
660 views

How to mitigate CVE-2015-1130 (Hidden Backdoor with Root) due to lack of Apple support?

This is related to CVE-2015-1130, a.k.a Hidden backdoor API to root privileges in Apple OS X. It appears Apple has refused to fix it in OS X 10.9 and earlier. Emil Kvarnhammar, the one who reported ...
7
votes
6answers
45k views

How to disable automatic wifi connection?

When OSX already knows an wifi network it auto connects to it, but when it doesn't know the wifi network it will auto connect depending of the setting of the "ask to join" toggle setting in system ...
5
votes
3answers
13k views

How do I disable Bonjour visibility after Yosemite install?

Since upgrading to Yosemite (from Mavericks) my MacBook Pro (Retina mid-2014) advertises itself on Bonjour (with "whats-my-name"). It was not visible in this way prior to Yosemite, and I have no ...
3
votes
2answers
5k views

OS X 10.9: where are password hashes stored

I think on previous versions of OS X, password were stored in the /etc/shadow file. Nevertheless, this file doesn't appear to exist in the later versions of the operating system - specifically OS X ...
3
votes
3answers
1k views

scheduled account lock Mac OS X

You can set your Mac OS X account to automatically lock the screen so that the password is required after a certain amount of time of inactivity, but can you do the same thing using a schedule (say at ...
2
votes
1answer
20k views

How can you reset security questions on an Apple ID when you have the password, but the security email is incorrect?

There's a bit of a story, but the nub of the issue is we have forgotten the answers to the security questions on an Apple ID used for purchasing apps and music and can't reset the answers / questions ...
10
votes
2answers
7k views

How long does Apple provide support for Mac OS X?

I am currently using Apple 10.6 (Snow Leopard). How long will Snow Leopard be supported for? Does Apple provide an end-of-life policy in writing? I have read that Apple tends to only provide security ...
7
votes
3answers
3k views

MacBook Air Kensington Lock Alternative

The MacBook Air has no Kensington lock slot. What other options are available for protecting it from theft?
6
votes
2answers
2k views

Should I use the same Apple ID for iCloud and iTunes?

Should I use the same Apple ID for iCloud and the iTunes store? My immediate assumption was "sure, of course, keep it simple", but today I read the following recommendation: One potential problem ...
5
votes
2answers
2k views

What is the s/mime encryption strength on iOS?

I've set up S/MIME on my iPhone, but unlike other mail clients, I'm not given the option to select the hash or encryption algorithms. I assume iOS makes this decision for me. Can anyone tell me what ...
4
votes
2answers
2k views

How to dump the content of keychain from the shell?

I'm testing the following command-line in the Terminal: sudo security dump-keychain -d login.keychain which I'd like to use to save all my passwords into a file. However when I run it, it keep ...
4
votes
3answers
1k views

MacBook Air/Pro: run script upon lid close?

How can one configure MacOS (10.8 or higher) to automatically and immediately call a user-designated script (probably a bash script) upon the user closing the display lid of a MacBook Air or Pro? ...
3
votes
2answers
155 views

My computer has no admin user

In system preferences, under users, standard is written under my name and there is no admin. When i try to change preferences it asks for admin name and password to unlock it but my login password ...