Has anyone seen a version of CCleaner (Piriform Software) that will work with Mavericks yet?

Your Mac runs maintenance in the background for you.

Third party so called Mac cleaning utilities can cause more harm than good.

Mac OS X: About background maintenance tasks

I totally concur with Carolyn.

Avoid the so called "cleanup" applications. They cause more problems then they solve.

Allan

OS X will secure erase files if you feel that is necessary. Personally I only think that is necessary when you are getting rid of equipment.

From my testing of the so called cleanup applications, I have found them either to not do what they claim they will or they do dangerous things without any warning what so ever.

Allan

You don't need to use Disk Utility. Just "Secure Empty Trash" from the Finder menu or hold down the Command key and right/control click on the trash icon.

You absolutely do not need any "clean up" software on a Mac. It will only cause problems, never solve them.

If you are concerned about security, you are really focusing on the wrong place. Getting rid of that PC is all you need to do.

If you are concerned about some of your data being hacked have you ever considered placing the data into an encrypted disk image?

I keep all my financial and personal data in encrypted disk images just in case.

Allan

Had a similar "PC" problem. Very scary (don't ask). So I understand being pathologicly nervous about this. If I may suggest (to Apple) an effective way to reduce customer concerns would be to define (for non-computer people), those things mentioned as concerns regarding vulnerability. Ex: Which port/s are used by "X" traffic? I have a lot of traffic w/ "Telnet" though it's often pointed out as being "more" vulnerable (by those who know more about this then me)

I had a "Nortan" security add-on a while back. Not to thrilled about it except for the multi-layerd firewall. That at least gave me the IMPRESSION of greater awareness and hence control. True or faulse...

If by Nortan you mean Norton then that is one of the worst things to install on a Mac. The only thing that I know of that is worst then Norton is MacKeeper.

So I would have to vote for false.

Allan

... If I may suggest (to Apple) an effective way to reduce customer concerns would be to define (for non-computer people), those things mentioned as concerns regarding vulnerability. Ex: Which port/s are used by "X" traffic?

Well known TCP and UDP ports used by Apple software products

I had a "Nortan" security add-on a while back. Not to thrilled about it except for the multi-layerd firewall. That at least gave me the IMPRESSION of greater awareness and hence control. True or faulse...

Besides the fact that Norton / Symantec's products run poorly on Macs, an impression of security or control is all it will do. Such impresions are detrimental to actual security due to the false comfort it you may perceive from using products like it.

The functions of a "firewall" are frequently misunderstood. Whoever first came up with that term as it applies to computers either regets it, or should.

OS X already includes everything it needs to protect itself from viruses and malware. Keep it updated with software updates from Apple.

The question you should be asking yourself is "how should I protect my Mac":

• Never install any product that claims to "speed up", "clean up", "optimize", or "accelerate" your Mac. Without exception, they will do the opposite.
• Never install pirated or "cracked" software, software obtained from dubious websites, or other questionable sources. Illegally obtained software is almost certain to contain malware.
• Don’t supply your password in response to a popup window requesting it, unless you know what it is and the reason your credentials are required.
• Don’t open email attachments from email addresses that you do not recognize, or click links contained in an email:
  • Most of these are scams that direct you to fraudulent sites that attempt to convince you to disclose personal information.
  • Such "phishing" attempts are the 21st century equivalent of a social exploit that has existed since the dawn of civilization. Don’t fall for it.
  • Apple will never ask you to reveal personal information in an email. If you receive an unexpected email from Apple saying your account will be closed unless you take immediate action, just ignore it. If your iTunes or App Store account becomes disabled for valid reasons, you will know when you try to buy something or log in to this support site, and are unable to.
• Don’t install browser extensions unless you understand their purpose. Go to the Safari menu > Preferences > Extensions. If you see any extensions that you do not recognize or understand, simply click the Uninstall button and they will be gone.
• Don’t install Java unless you are certain that you need it:
  • Java, a non-Apple product, is a potential vector for malware. If you are required to use Java, be mindful of that possibility.
  • Disable Java in Safari > Preferences > Security.
  • Despite its name JavaScript is unrelated to Java. No malware can infect your Mac through JavaScript. It’s OK to leave it enabled.
• Block browser popups: Safari menu > Preferences > Security > and check "Block popup windows":
  • Popup windows are useful and required for some websites, but popups have devolved to become a common means to deliver targeted advertising that you probably do not want.
  • Popups themselves cannot infect your Mac, but many contain resource-hungry code that will slow down Internet browsing.
  • If you ever see a popup indicating it detected registry errors, that your Mac is infected with some ick, or that you won some prize, it is 100% fraudulent. Ignore it.
• Ignore hyperventilating popular media outlets that thrive by promoting fear and discord with entertainment products arrogantly presented as "news". Learn what real threats actually exist and how to arm yourself against them:
  • The most serious threat to your data security is phishing. To date, most of these attempts have been pathetic and are easily recognized, but that is likely to change in the future as criminals become more clever.
  • OS X viruses do not exist, but intentionally malicious or poorly written code, created by either nefarious or inept individuals, is nothing new.
  • Never install something without first knowing what it is, what it does, how it works, and how to get rid of it when you don’t want it any more.
  • If you elect to use "anti-virus" software, familiarize yourself with its limitations and potential to cause adverse effects, and apply the principle immediately preceding this one.
  • Most such utilities will only slow down and destabilize your Mac while they look for viruses that do not exist, conveying no benefit whatsoever - other than to make you "feel good" about security, when you should actually be exercising sound judgment, derived from accurate knowledge, based on verifiable facts.
• Do install updates from Apple as they become available. No one knows more about Macs and how to protect them than the company that builds them.

Summary: Use common sense and caution when you use your Mac, just like you would in any social context. There is no product, utility, or magic talisman that can protect you from all the evils of mankind.

OnyX for Mavericks in in development.

http://www.titanium.free.fr/downloadonyx.php

I use both CCleaner and OnyX and eagerly await both on Mavericks. I have used OnyX for several years (Since Leopard) when it replaced the very slow Leopard Cleaner (I had Tiger Cleaner before that!). I find both of these applications exctremely beneficial and have never had a negative issue with either. I use CCleaner several times a day and Onyx Once a week when I back up my system!
Quite the contrary to what has been written here, My Machine runs a lot faster, My internet is not bogged down with overloaded Caches and Cookies and no nagging history makin it difficult to find things in either Browsers of applications
Really hope these 2 apps will be here in a couple of days rather than weeks! - and that Branox figiure out a way to hacj the drap grey logon screen too and bring ius the latest version of Loginox

I would most definitely agree though where it comed to "ap`plicatios" the likes of Norton, McAfee etc... These are horrendous products, period! I had McAfee on a laptop I had before I finally threew said Laptop against the wall and forked out for an iMac a week later! Practically brought my machine to a halt! Also beware Google Chrome on Mac... Crank open The Activity Monitor and note the amount opf processes it runs...as well as the amount of Memory it eats up!!!

CCLeaner and OnyX do not and never have impacted any of my OS X installations or Macs like Windows Evilware Virus Suites have! Norton is nothing short of a horror story to remove from a Windows installation...unless you know your stuff! I have taken it off many an installation for friends and replaced it with AVG or even Microsoft Security Essentials or Windows defender...depending on the OS and platform they were running! (These are the recommended security apps for XP, Windows 7 x64 bit and Windows 8 X64 bit respectively.... and all of them are free and do not oimpact or hijack your system resources anything like Norton or McAfee do....