Browser Add-ons — Read Terms and Conditions

I found this wonderful sounding add-on to Chrome this morning. It lets you select one or more Gmail emails to convert to PDF. Then, you can download the PDF or put it on Google Drive. I was quite excited and downloaded the add-on.
 
When I installed it, I learned that I have to create a CloudHQ account and give CloudHQ permissions to have read-only access to my emails.
 
No. Just no.
 
Always read Terms and Conditions when installing anything on your computer. The more companies that have access to your information, the more likely you will become a victim to a data breach and identity theft.
 

Cost of Goods (COGS) – or Cost of Sales

The terms Cost of Goods Sold (COGS), Cost of Sales, and Cost of Revenue are synonymous.  They describe the direct costs of producing a good or service that is sold to customers.   In this post, let’s just refer to this as COGS.

Direct costs include direct labor and materials, and facility or plant overhead that is directly tied to producing the good or service.  For example, the salary of a person assembling a television would be a direct cost.  Extra electricity used to run a machine used only to produce the good or service would also be included.

But, the salary of the janitor at a plant that makes televisions, phones, and alarm clocks would be an indirect cost.   The reason is that the cost of the janitor does not increase or decrease as a result of making more or less televisions.  The amount of floor space to sweep in the facility is the same regardless of the number of televisions produced (within reason.)  The janitor’s salary is an example of SG&A costs.  SG&A stands for selling, general, and administrative.  SG&A expenses occur when the company incurs an expense for

  • Promoting, selling, or delivering products and services
  • Managing the overall company

These types of costs will appear on the company’s quarterly (or annual) income statement for the period they were incurred.  More specific examples of indirect SG&A costs include sales commissions, advertising and promotional materials, management compensation, compensation for support staff, rent, utilities, and office supplies.

The general rule is that direct costs do not include general overhead or administrative expenses.  These expenses are not part of the COGS calculation.

COGS is key metric for cost analysis because shows the operational costs of producing a good and service. If cost of sales is rising while gross revenue is flat, net earnings (gross profit) will decrease.  Remember that:

(Gross Revenue) – (COGS) = (Gross Profit)

Note that for a service business without a tangible, physical, product, COGS is a bit of a misnomer since there is not a “good.”  That is why the term Cost of Sales is often used.  But, the terms mean the same thing.

 

Avoid Reusing Passwords

Do you use the same password on multiple websites?
 
If so, it is possible that hackers can download a list of email addresses and associated passwords with your information. Are you on a list like this?
 
This is the reason that everyone should use strong passwords along with a password management program like Keepass. Keepass helps you keep track of passwords so that it is easier to use unique ones for each website.
 

Google Knows…

If you have an Android phone, Google likely has a history of most of the places that you have been over the past 10 years.  You can view that history by signing onto your Google account (via Gmail, etc.) and then going to:

https://myactivity.google.com/more-activity

Under location history, click “View Timeline.”  A map will appear with dots showing where you have been.   Based on my map, it appears that the history may only include locations within the United States and Canada.  And there are missing places.  But, the accuracy of the information displayed is quite refined.  For example, I can zoom into a location I visited on a business trip a few years ago and can tell the hotel I stayed at.  I can tell when I arrived at the hotel for the evening and when I left for the airport the next morning.

This location tracking is turned on by default on Android devices.  It can be turned off in theory.  But, it is entirely possible that Google collects and retains this information anyway.

World GDP by Top Ten Countries – 1961 to 2017

This video is fascinating.  To me, the interesting parts are

  1. The US is on top.  Growth is steady and consistent.
  2. Japan has blossomed and then dramatically crashed.
  3. China’s rise is amazing.   Can it continue?

It would be interesting to know what policies of these countries contribute the most to the end results.

 

Wi-Fi Networking Links

TL-WR802N Router

Here is the official link to the TL-WR802N router that I purchased in November 2018.  Note that this router comes with a highly insecure default configuration.  With some simple cracking tools in Kali Linux, I was able to obtain its login name and password in under one minute…

https://www.tp-link.com/us/products/details/cat-5506_TL-WR802N.html

Nevertheless, Open-WRT and DD-WRT can be installed on it to provide a more secure system.

https://openwrt.org/toh/tp-link/tl-wr802n

https://wr802n.blogspot.com/2018/04/dd-wrt-install-on-tp-link-tl-wr802n.html


Secure Your Router’s Access (OpenWRT)

How to Make an ISO Copy of Your Hard Drive on Ubuntu

Portable Apps

 

 


General Links

Lock Down Wi-Fi with Wireless Isolation

Wi-Fi Security – WEP, WPA, and WPA2 (hakin9_wifi_EN.pdf)

CVE Details – The Ultimate Security Vulnerability Database

https://tools.tracemyip.org