What Does Your User Agent Say About You?


A user agent is a computer program representing a person, for example, a browser in a Web context.

Besides a browser, a user agent could be a bot scraping webpages, a download manager, or another app accessing the Web. Along with each request they make to the server, browsers include a self-identifying User-Agent HTTP header called a user agent (UA) string. This string often identifies the browser, its version number, and its host operating system.

Spam bots, download managers, and some browsers often send a fake UA string to announce themselves as a different client. This is known as user agent spoofing.

The user agent string can be accessed with JavaScript on the client side using the navigator.userAgent property.

A typical user agent string looks like this: "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:35.0) Gecko/20100101 Firefox/35.0".


User Agent String

Browser Data

User Agent Mac Os

Daniel Brown
• Tuesday, 08 December, 2020
• 8 min read

We've had to do this because otherwise we get constantly overrun by inconsiderate or malfunctioning bots which overload the system. As such, we're forced to block traffic from popular web hosting companies, VPNs and Proxies, we also rate limit requests and have some other checks too.

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If you need to get access to the listings of user agents you can either get them in an easy-to-use database download or via the API. You’ve probably been annoyed at one time or another when visiting a website that requires a specific browser.

Luckily, you can fool a website into thinking you’re using a different browser and you can do this with most, including Safari. The solution to this was often to send a false user agent string,” which would fool the web server into delivering you the preferred content.

Today, users are less likely to have a problem since websites and browsers are better at adhering to web standards. If you use Apple OS X’s Safari, here’s how you change the user agent, and even create custom ones as well.

When Safari visits a website, it will send a string of text such as this: Now Safari will have a new menu devoted solely to development tools.

The “Other…” option allows you to specify an user agent other than those listed, such as if you’re curious to see how Google Chrome on an iPad running iOS 8.2 renders, you’d use the appropriate string. If you have anything you’d like to add, such as a question or a comment, please provide feedback in our discussion forum.

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He's covered Windows, Android, macOS, Microsoft Office, and everything in between. This article is part of our ongoing series explaining various processes found in Activity Monitor, like kernel_task, hide, worker, installed, WindowServer, blued, launched, backup, opendirectoryd, power, created, config, mdnsresponder, and many others.

Today’s process, UserEventAgent, is a daemon, which means it runs in the background. The UserEventAgent utility is a daemon that loads system-provided plugins to handle high-level system events which cannot be monitored directly by launched.

Previously, we talked about the process config, which runs in the background and monitors the status of various things about your Mac. In the UserEventPlugins folder, you’ll find plugins related to Bluetooth, the zero configuration networking tool Bonjour, time zones, Time Machine, and even the Touch Bar.

This is a wide variety of functionality, meaning there are a lot of potential reasons for UserEventPlugins to start using up a great deal of system resources. If the problem persists, try disabling any hardware or software you added recently.

Justin Pot has been writing about technology for over a decade, with work appearing in Digital Trends, The Next Web, Life hacker, MakeUseOf, and the Zapier Blog. He also runs the Hillsboro Signal, a volunteer-driven local news outlet he founded.

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Rv: gecko version indicates the release version of Gecko (such as 17.0 “). The Chrome (or Chromium/Blink-based engines) user agent string is similar to Firefox’s.

For compatibility, it adds strings like HTML, like Gecko and Safari. The Opera browser is also based on the Blink engine, which is why it almost looks the same, but adds “Or/”.

In this example, the user agent string is mobile Safari’s version. During authentication flow in Safari, we have a case when in order to satisfy a condition policy, user needs to install the app on his device.

Start Recheck from a normal user account. Optionally, you can run it from a user account with Administrator privileges.

Select a problem from the drop-down menu to enable the “Start Recheck” button. Click on Start Recheck Allow the program to run to completion.

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Hint: Use the Add Text option from the ASC editor's menu bar. I don't know of a single 3rd-party software program on my MacBook that would require a keychain entry, therefore it's either Mojave related, or it needs to get deleted.

Swcd is the shared web credential daemon. That message is generated when NSURLSession delivers the presession:task:willPerformHTTPRedirection:request:completionHandler: delegate callback to SACD.

When SACD gets this delegate callback and issues this log message, it always calls the completion handler with nil, causing the body of the redirection response to be delivered as the payload of this request. Second it helps us determine the location of any agents or daemons that may be the cause.

The sic daemon (SACD) components can be located at: /System/Library/LaunchAgents/ /System/Library/Sandbox/Profiles/ /USR/lib exec/SACD Usually I'm able to find info about things like this using a simple search on the internet, but couldn't find anything about Sic Agent Database (not even on the Apple community support forum), so I was starting to get concerned that somehow some malware or something had gotten downloaded onto my laptop.

I've been a Mauser since System 8.x, so I'm pretty careful about what I download & install, websites that I visit, etc. Although I have been around well before System 8, I started with punch cards to run FORTRAN on main frames, then on to Commodore PET > original IBM PC, and finally entered into Mac domain with OS X 10.1 for home use ... so I fully understand your point.

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Apple added a lot of “lock down” processes with, especially starting with macOS Sierra and appears to continue to do so with each new OS addition. I wouldn't be surprised to see even more “mysterious” processes showing up in the Activity Monitor going forward.

The reason is that the potential solutions to resolve it/them may be different from that of the OP of this post. Installing Recheck does not place any hidden files on your Mac.

(f=1/(r-u), n=(u+r)*f, n=2×u*r×f):(n=-1,n=-2×r), n}, lookAt:function(n, t,i, u){var h, c,l,a, v,y, e,o, s,f, p=t, w=t, b=t, k=u, d=u, g=u, nt=i, tt=i, it=i;return Math.abs(punt)<1e-6&&Math.abs(Watt)<1e-6&&Math.abs(b-it)<1e-6?r.identity(n):(e=punt, o=Watt, s=b-it, f=1/Math.hypo(e, o,s), e*=f, o*=f, s*=f, h=d×s-g×o, c=g×e-k×s, l=k×o-d×e, f=Math.hypo(h, c,l), f?(f=1/f, h*=f, c*=f, l*=f):(h=0,c=0,l=0), a=o×l-s×c,v=s×h-e×l, y=e×c-o×h, f=Math.hypo(a, v,y), f? Document.cookie = “51D_ScreenPixelsHeight=” + screen.height;ScreenPixelsWidthJavaScript//Set screen pixels width cookie.

“Crawler” is a generic term for any program (such as a robot or spider) that is used to automatically discover and scan websites by following links from one webpage to another. This table lists information about the common Google crawlers you may see in your referrer logs, and how they should be specified in robots.txt, the robots meta tags, and the X-Robots-Tag HTTP directives.

Mozilla/5.0 (Linux; Android 4.2.1; en-us; Nexus 5 Build/JOP40D) Apple WebKit/535.19 (HTML, like Gecko; googleweblight) Chrome/38.0.1025.166 Mobile Safari/535.19 ‡ Chrome/ W.×.Y.Z in user agents Where several user -agents are recognized in the robots.txt file, Google will follow the most specific.

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However, Safari will revert to automatic mode between launches; it will not remember your setting. To make the changes, quit Safari and open your user's file, which you'll find in your user's Library/Preferences folder in an editor capable of opening binary list files.

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