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How To: High Heart Rate Warning on Your Apple Watch? Here's What That Means

Your Apple Watch sends you notifications from friends, family, and the apps that are important to you. Occasionally, however, the watch may scare the heck out of you with a notification warning of an abnormal, elevated heart rate. If you have no history of heart conditions, this alert might come as a shock. Why do you have a high heart rate, and what are you to do with the information?

How To: Use Command Injection to Pop a Reverse Shell on a Web Server

Command injection is a technique used by hackers to execute system commands on a server, usually via a web application or some kind of GUI. This can happen when an application provides some sort of functionality to the user involving the use of system commands. When the input is not properly sanitized, commands not originally intended to be run are allowed to be executed.

Hacking macOS: How to Remotely Eavesdrop in Real Time Using Anyone's MacBook Microphone

Google, Amazon, and Facebook are always listening. But what's worse? Hackers are listening, too. Windows PCs are particularly vulnerable, but with a few simple commands, a remote attacker can even take over the microphone on someone's Mac computer, streaming audio and listening to private conversations in real time without the victim's knowledge, abusing an overlooked security consideration.

Snapchat 101: How to Make Your Own Custom Geofilters & Lenses

Snapchat is in the midst of a massive redesign — one that not everyone loves. Still, it's clear that this is a decision fueled by money, and Snap Inc. believes this redesign will help attract more advertisers. Even so, Snapchat has a few more tricks up their sleeves to make a little extra dough. And while the average user couldn't care less about ads, they very easily could care about custom Filters and Lenses.

How To: Tips to Make Face ID Work Every Time on Your iPhone

Aside from the second-generation iPhone SE, all new iPhone models since the iPhone X have had Face ID instead of Touch ID as the biometric authentication technology. While Touch ID can be touchy, Face ID is not without its own issues. If you can't get Face ID on your iPhone to recognize your face and unlock your iPhone, there are plenty of things you can try to get it working again.

Tasty Testing: Artisanal Cheese Reveals Microbial Secrets of Deliciousness

Whether your palate runs to domestic or imported, a piece of cheese can be a real treat for the senses. Its smell, taste, and texture are all parts of its appeal. A big part of what makes that savory wonderfulness comes from the microbes in and on the cheese. Thanks to a team of researchers dedicated to studying those microbes, we have a better understanding of their importance to cheese and us.

News: HIV Prevention Ring Passes Safety Testing Clinical Trial

Young girls, especially those who live in areas where HIV is epidemic, like sub-Saharan Africa, are particularly vulnerable to becoming infected with HIV. A vaginal ring containing the antiviral agent dapivirine has been shown to decrease the chance of developing HIV-1 in adult women over 21 and now in the first step for use in adolescents, the ring has been shown to be safe and well-tolerated in that younger age group.

Put Down the Ointment: Topical Antibacterials Totally Disrupt Your Skin Microbiome

The next time you suffer a cut or abrasion, think twice before you reach for the Neosporin. It's time, and mom, tested — you get a cut, you wash it carefully, then apply some triple-threat antimicrobial ointment. You may or may not slap on a band-aid. We won't cover it here, but so that you know, covering the wound with a sterile dressing or band-aid is a good idea.

News: Samsung Galaxy Note 8 Revealed — Dual Cameras, 6 GB RAM, Bixby & More

The Samsung Galaxy Note 8 (or Galaxy Note8, depending on how you like it) is one phone which couldn't possibly have bigger shoes to fill. Samsung's latest flagship has officially been announced, so it's time to decide whether not it's capable of filing the void left by the failed Note 7. From the revealed specifications and details, the Note 8 is turning out to be one device worth pre-ordering.

News: Despite Effective Vaccine, Measles Still Threaten Worldwide

Nineteen days ago, several hundred people could have been exposed by a traveler with measles in Nova Scotia, Canada. The next day, someone flying from Minnesota to Nebraska may have spread the measles to other passengers. A couple weeks ago, it's possible that a man and his six-month old child spread the measles in several Seattle-based locations. Authorities are trying to locate persons who may have been in contact with these people. None of the persons with measles were vaccinated. Why?