If you use Google’s label system to sort your Gmail messages, you can create a mail filter to apply one of those labels to new messages that meet the filter’s rules — like the name of the sender. If you do not have a label for the recipient set up before creating the filter, you can make them both at once.

To set up a filter for a regular email correspondent or group of contacts, log into your Gmail account on the web, click the gear icon on the right side of the window and select Settings. At the top of the Settings screen, click “Filters and blocked addresses.”

At the bottom of the screen, click “Create a new filter.” In the Filter box, fill in the information for the email senders you want to group under a filter. When you are finished, click “Create a filter with this search” in the bottom right corner of the box.

As an alternative, you can set up a filter from the search box in your Gmail inbox. Enter your keywords, click the magnifying-glass icon and then the small black arrow in the search windows to get the “Create a new filter” link.

Once you have clicked the “Create a filter with this search” link and have proceeded to the next screen, turn on the checkbox next to “Apply the label” and choose a label from the drop-down menu next to it. If you do not have a ready-made label in the list, choose “New label” and create one.

When you have all the rules in place, click the “Create filter” button at the bottom of the box to sort incoming messages. If you want to modify a filter’s behavior, return to the “Filters and blocked addresses” tab in the Gmail settings, find the filter in the list and click the edit (or delete) button to the right.

Allowing the Chrome browser to save your login and password information for website accounts is safer now than it used to be with the Smart Lock security feature that Google introduced last year for its Chrome software. Like a standard password manager program, Smart Lock saves and syncs passwords across the computers and mobile devices you use with your Google account. You can see the stored list in the Chrome settings or by logging onto your account and visiting passwords.google.com; you may also need to supply your computer’s main user password if you use it to log into the machine.

Google is not the only browser creator to offer a built-in password manager. Mozilla Firefox and Opera have their own version of the feature, as do Microsoft’s Edge and Internet Explorer browsers. Apple includes password-management tools with its Safari browser (as well as with its iCloud Keychain service and the Keychain Access software that comes with the Mac’s operating system).

Some security experts recommend using a stand-alone password manager instead because many programs work across different platforms, provide strong-password generators and use higher levels of encryption for stored data.

Using the browser’s password manager to remember your login information can be convenient and may help avoid the tendency (and weak protection) of using overly simple passwords — or the same password across multiple sites. But while most browser-based password managers have upped their security protections, some risks can remain, especially if your computer or master-account password is breached. For example, the synced password data of some users may have been compromised after Opera’s servers were attacked over the summer.

If you do not want to use a separate app or keep your passwords written down on paper in a secure location, Google’s browser has one of the better-protected integrated password managers. But again, keep in mind that hacks can happen. As extra precautions, set up passwords or PIN codes to get into your computer and mobile devices, make sure you have two-step verification turned on for your Google account and encrypt the synced data stored on Google’s servers with a passphrase.

Yahoo Inc. revealed Wednesday (14 December 2016) that it suffered a security breach in August 2013 that affected more than 1 billion member accounts, twice as many as in its 2014 hack.

As in the earlier attack, the 2013 intruders apparently were not able to acquire credit card information, bank account data or unencrypted passwords. But they may have had access to Yahoo YHOO, -0.03%   members’ names, email addresses, telephone numbers, dates of birth, hashed passwords and, in some cases, security questions and answers.

The advice given for the first breach still stands. If you have a Yahoo email account, what should you do?

1. Change your password. Even though Yahoo says it will notify potentially affected users, change your password anyway to make sure. Do it now. Yahoo is phasing out security questions and encouraging users to sign up for their Account Key service, which can authenticate your account through your smartphone. That’s not a bad option. (If, for some reason your Yahoo account still asks you security questions, change them immediately.)

It shouldn’t have to be said in 2016, but people still do it, so … for the love of God, don’t use the same password on multiple sites. That only makes it easier for hackers to hop from one of your accounts to another. If you do recycle passwords, stop it, and go change those ones too.

Read: Facebook’s Mark Zuckerberg is just like you and me — and got hacked because of it

Other tips: Avoid obvious passwords like “password” or “me123” or common terms that can be easily guessed. Mix up letters, numbers and symbols.

If you want more peace of mind, change the security questions for any of your other accounts that may have them. For example, if one of your Yahoo security questions was “What’s your favorite sports team,” and your online bank account asks the same security question, you might want to change it in case your Yahoo answer was stolen and now some hacker in Russia now knows you’re an Eagles fan.

2. Set up two-factor authentication. Passwords are inherently flawed, but two-factor authentication is the best way to secure them. When you’re updating your account, Yahoo will ask you if you want to do this. Do it. Essentially, it will send a text message to your smartphone with a unique login code each time you log into your account. Yes, it can be a pain. But it will also make it much less likely that someone else will be able to access your account.

3. Keep an eye on your account. While it’s hard to say what to look for, look for things that don’t look right. Are there emails in your “sent” box that you didn’t send? Are you getting shady-looking emails that ask you to click on links? Or official-looking emails asking for your password, or other personal information? Don’t fall for it. Remember, constant vigilance is the price of free email.

And if you’re one of those people snickering, “Who still uses Yahoo email?” go check yourself. If you once had a Yahoo account but you don’t use it anymore, log back on, delete what’s in there, and officially close it. Ten-year-old data can bite you in the butt just as easily as current information.

When choosing a smartphone for your child, factor in the amount of parental control you want to have over the device, and the types of phones already used by other family members. Cost and flexibility may also be considerations. Before making a decision, it may be useful to have a chat with the child about what the phone will be used for — and how to behave with it.

The online Parent Tech Guide describes the differences between Google’s Android system and Apple’s iOS software. The site highlights Android’s looser control over what app developers can do, but notes the greater number of versatile third-party parental control apps available; some versions of Android support user profiles that can be somewhat restricted. In comparison, Apple generally keeps a tighter grip over its iOS system and the apps that run on it, although additional device management software can also be downloaded.

Google includes parental controls for its Google Play Store. Apple’s restrictions settings for iOS not only block access to the App Store (and certain types of content), but also control built-in apps, features and settings on the iPhone. In a phone-to-phone comparison late last year, the Tech Fix column found iOS superior to Android for overall parental controls.

Over the years, Apple’s more strictly curated App Store has had fewer problems with malware and privacy-invading apps, but the gap has closed and both companies have stepped up defenses to keep children from running up the credit card bill with unsupervised in-app purchases. The Google Play Family Library and Apple’s Family Sharing tools for iOS allow family members to manage and share digital content purchased from their respective online stores.

Both Android and iOS include built-in device tracking for locating the phone on a map.

Android is an open-source operating system that has been adapted by many manufacturers to run on their own hardware, which can mean cheaper phone but a less consistent user experience. Apple makes its own hardware and software for its mobile gadgets (as well as for its laptop and desktop computers), so its products tend to work well together. The company also has its own trade-in program that may be useful when the child is ready for an upgrade; iPhones have traditionally had a better resale value than their Android counterparts.

For many parents, buying that first phone for a child is the easy part, but there are plenty of resources online for dealing with the social and safety aspects of smartphone ownership. For example, the Common Sense Media site has a “Cell Phone Parenting” section with a collection of articles to help parents manage their children’s smartphones. Connect Safely, a nonprofit technology education organization, has a helpful nine-page PDF called “A Parent’s Guide to Mobile Phones” that offers advice and tips for those getting ready to take the plunge.