Agenda · How Programs Work Together Programs share functionality. They can use each other's code. The Operating System provides: – Keyboard access – Screen display – Network

Agenda

● Open forum● Identify subjects for breakout groups and later meetings● Main presentation● Tea and coffee break (3.30pm)● Breakout into smaller groups

Topics to Cover

● Operating system and applications overview;● Applications or programs;● Folders and files;● Keystroke short cuts;● Adding a new user;● Checking whether virus warnings are genuine;● Avoiding unwanted applications;● Avoiding being tracked.

Topics to Cover


Operating System Overview

● The operating system is the software heart

● It joins applications to hardware

● Windows, MAC OS, OSX, Unix, Linux, Android, etc all do the same job

Operating System

CPU Memory Devices

Applications

Disk DrivePrinter

Applications (Programs)

● The things you use– Word processor,

Spreadsheet, Skype, Photo editor, Video editor, eMail, Genealogy app, Browser, etc.

Operating System

CPU Memory Devices

Applications

Disk DrivePrinter

Topics to Cover


Applications or Programs

● Programs provide usable functionality– Word processors

– Spreadsheets

– Email

– Photo management

– Photo and video editing

– Browsers

How Programs Work Together

● Programs share functionality.● They can use each other's code.● The Operating System provides:

– Keyboard access

– Screen display

– Network access

– Printer access

– Disk access

● Browsers call on Search Engines, Spell Checkers, Video Players, Audio Players, etc.

WordProcessor

Spellchecker

One application can use another's functions – libraries,plug-ins, extensions.

Topics to Cover

● Operating system and applications overview;● What an application or program is;● Folders and files;● Keystroke short cuts;● Adding a new user;● Checking whether virus warnings are genuine;● Avoiding unwanted applications;● Avoiding being tracked.

Folders and Files Model● Hard drive = filing cabinet● Folders = drawers● Files = documents

● Think 'Tidy'– Car– Hobby– Utilities

● Tax–My returns

● U3A–My presentations

– Videos

Files and Folders Basic

● Each User has their own area● Only users with admin rights can see everything● Data files are of different types, eg:

– aaa.txt

– bbb.doc

– ccc.bmp

– ddd.jpg

● Macs do not use a file suffix to show the file type● Use My Computer or My Documents to open the File

Manager

Files and Folders Selection

● Select a single file by clicking on it● Select several files:

– Click on the first

– <Ctrl> click on the others

● Select a block of files:– Click on the first

– <Shift> click on the last

● Either Drag and Drop or <Ctrl>C and <Ctrl>Vto copy them

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Simple Short-cuts (All PCs)

● Link to Microsoft shortcuts page

Shortcut FunctionCTRL +A Select All

CTRL +C Copy to paste board

CTRL +X Cut to paste board

CTRL +V Insert at cursor

CTRL +B Bold

CTRL +I Italics

https://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/keys_general.mspx?mfr=true

More Editing Short-cuts

Shortcut FunctionCTRL +Right Arrow Move cursor one word to

right

CTRL +Left Arrow Move cursor one word to left

CTRL +SHIFT +Right Arrow Select word to right of cursor

CTRL +SHIFT +Left Arrow Select word to left of cursor

CTRL +Z Undo last action

CTRL +Y Redo last action

ALT +F4 Close window or application

CTRL +S Save file

WinKey Short-cuts

● ⊞ Win+D shows the desktop, or restore hidden programs when pressed a second time.

● ⊞ Win+E opens Windows Explorer.● ⊞ Win+F opens Find files and folders.● ⊞ Win+M minimizes all windows.● ⊞ Win+ Shift+M restores windows that were minimized with Win+M.⇧ ⊞● ⊞ Win+R opens the Run dialog box.● ⊞ Win+U runs Utility Manager.● ⊞ Win+Pause or Win+Break opens properties of My Computer.⊞● ⊞ Win+F1 opens Windows Help.● ⊞ Win+CTRL+F opens Find computers.● ⊞ Win+Tab cycles through taskbar buttons.↹●

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Adding a New User

● Allows the new user separate access to files and applications● Each user has their own workspace● Only the Admin can access everywhere ...● You should have two accounts:

● Admin – use only when necessary● User – for general use

● Give guests (grandchildren) their own log in● They can then play without affecting your setup, files and data

XP – Adding a New User

● Non network example... ● You must have a computer administrator account on the computer to add a new user to the computer.● Open 'User Accounts' in Control Panel.● Click 'Create a new account'.● Type a name for the new user account, and then click 'Next'.● Click 'Computer administrator' or 'Limited', for the type of account you want to give to the new user, and then click 'Create Account'.



Topics to Cover


Virus Warning Validity

● Check warnings on these sites:

● http://www.hoax-slayer.com/

● http://www.f-secure.com/virus-info/hoax/

● http://www.snopes.com/computer/virus/virus.asp

http://www.hoax-slayer.com/

http://www.f-secure.com/virus-info/hoax/

http://www.snopes.com/computer/virus/virus.asp

Topics to Cover


Avoiding Unwanted Applications

● Read the screens● Don't just click● Do you want

Google Chrome?

Read everything!!!

Topics to Cover


You’ll never be alone

● Google, Yahoo and Bing 'Track', 'Target' and 'Bubble' you. They:

– Tune your search results to what they know about you

– Send you annoying adverts– Limit the results to your searches

● Avoid this with Firefox or Chromium and the DuckDuckGo search engine:

– Firefox settings– DuckDuckGo settings

Tracking 1

● When you search Google, Yahoo or Bing:– Your search term is also sent to the requested site

– Unless you take precautions it will also be sent to other sites. You will be tracked

– Check your browser with Panopticlick https://panopticlick.eff.org/

https://panopticlick.eff.org/

Test Results

Tracking 2

● Who cares about which sites they visit?● Many sites have third-party ads, and those third-

parties build profiles about you, so they can follow you.

● Your profile can also be sold, so if you had a cold sore and looked up 'herpes', your insurance might go up.

● Your searches are saved by Google, and may be legally requested.

● The same applies to your email.

Firefox Search Engines

● You can add any search engines you like

● Click on ‘Manage Search Engines’ to change the order or delete the unwanted

DuckDuckGo

Firefox will check that you really want to install duckduckgo

Tracking 3

● Bubbling is when your search history is used to promote what you like, and demote what you do not like.

● Different people get different results.

Firefox - Security

If you share a PC with your dearly belovedand don’t want them to know what birthday presentyou have bought them, use the ‘Privacy’ setting.

Firefox Add-ons

Enter search term here

Choosehere

Firefox Add-ons

Install Disconnect first, then restart Firefox

Firefox Set Up 1

This is in Windows XP

Set home page here Block pop-ups here

Firefox Set Up 2

Set ‘No tracking’ hereBlock dangerous sites here

Set master passwords for auto completion here

Firefox Master Password

Conclusion

● To optimise your security:– Use your browser features

– Tune the features for optimum convenience

– Use a non-tracking search engine

– Use an https enforcer to maximise encrpyted links

– Use a tracking blocker like Disconnect

– Use an on PC adblocker like Ublock Origen

– Use Lightbeam to see how successful it all is

● Some sites may stop working, but the measures can be reduced to make them work again