Khi bạn khởi động máy tính bằng floppy disk bị nhiễm virus, Windows sẽ không thể phát hiện ra virus đó, điều này cũng tương tự với nhiều hệ điều hành. Một số virus chẳng hạn như FORMS virus, có thể tiêm nhiễm vào boot sector của ổ đĩa cứng của bạn. Vậy làm thế nào để biết được máy tính của mình bị nhiễm boot sector virus và cách bảo vệ nó như thế nào.
This is the first in a series of three books about computer
viruses. In these volumes I want to challenge you to think in new
ways about viruses, and break down false concepts and wrong ways
of thinking, and go on from there to discuss the relevance of
computer viruses in today’s world. These books are not a call to a
witch hunt, or manuals for protecting yourself from viruses. On the
contrary, they will teach you how to design viruses, deploy them,
and make them better. All three volumes are full of source code for
viruses, including both new and well known varieties....
Code virus brain : ; This is the ashar variant of the classic Pakistani Brain virus. It is large ; by today's standards, although it was one of the first. It is a floppy only ; boot sector infector. brain segment byte public assume cs:brain, ds:brain ; Disassembly done by Dark Angel of PHALCON/SKISM org 0 cli jmp entervirus idbytes db 34h, 12h firsthead db 0 firstsector dw 2707h curhead db 0 cursector dw 1 db 0, 0, 0, 0 db 'Welcome to the Dungeon ' copyright db '(c) 1986 Brain' db 17h db '& Amjads (pvt) Ltd VIRUS_SHOE '...
Chống virus theo cách của CMC InfoSec
.Ngày nay, ở đâu có máy tính ở đó có virus. Virus có thế lây nhiễm bất cứ loại file nào, chúng len lỏi vào tất cả ngõ ngách trong máy tính. Làm thế nào để phòng chống virus hiệu quả? Không chỉ là những file .com, .exe, .bat mà virus còn lây nhiễm các mã thực thi trong boot sector của đĩa mềm hay trong một số khu vực hệ thống của đĩa cứng, lây nhiễm vào các chương trình soạn thảo của bộ Microsoft. Cách thức lây nhiễm cũng vô cùng đa...
Drainage wil l be of crucial importance to the success of the development proposals for
the Boa Plain. Flooding is caused by a combination of heavy local rainfall and overflow
from the rivers that flow across the plain. A separate drainage strategy is needed for the
northern sector between the two largest rivers, the Meme and Mokoko, where floods,
particularly from the former, are much larger and last longer than elsewhere. In this
sector a number of major drains leading west, by the most direct route to the sea, wil l
be required — with some remodelling of the Mokoko...
Aidfile Recovery Software (ARS) là một công cụ khôi phục dữ liệu mạnh mẽ dùng để khôi phục lại các tập tin bị mất do: xóa nhầm, định dạng lại ổ cứng, phân chia lại phân vùng ổ đĩa, lỗi phân vùng, ổ đĩa … ARS hỗ trợ các tập tin hệ thống trên chuẩn ExFAT/FAT32/NTFS.
; This is the ashar variant of the classic Pakistani Brain virus. It is large
; by today's standards, although it was one of the first. It is a floppy only
; boot sector infector.
brain segment byte public
assume cs:brain, ds:brain
; Disassembly done by Dark Angel of PHALCON/SKISM
In this conceptual chapter, we explore the above issues by reviewing relevant literatures,
identifying current trends and discussing the potential impact of these on the veterinary
profession. With few studies in this particular area, the authors adopt an inductive
approach, designed to generate new understanding and propositions for further research
(Rosa & Dawson, 2006). Following this introductory section, we examine some of the recent
changes within the agricultural sector and the impact of these on the veterinary profession.
The chapter concludes with a
discussion on the implications of all these changes for the veterinary sector and offers some
suggestions for future research. Thus, the authors lay the theoretical foundation for future
empirical work in this field by debating some key concepts and generating hypotheses for
All subjects interviewed received the first draft of the Apheis 2 report, which included a compilation of
findings section and a sample city report. Subjects were then asked to rate the documents on scientific
soundness, trustworthiness, relevance of content to their needs, and organization and presentation of
All subjects interviewed in Spain rated the Apheis documents favorably to very favorably overall, and
rated them slightly better than did the subjects interviewed in London.
The wireless carrier turned to its longtime business partner, ADC, for help. Network technicians analyzed
a cluster of 11 BTS sites for a two-week period. Each BTS site included a three-sector, diversity tower
with the average height of each tower at 180 feet. Dropped Call (DC) and Failed Call Attempt (FCA)
data was gathered on each sector of each tower.
We are all aware of the essential role that insurance services play as a commercial and
infrastructural service. From an infrastructural perspective it promotes financial and social
stability, mobilizes and channel savings, supports trade, commerce and entrepreneurial
activity and improves the quality of the lives of individuals. In a fast-globalizing world
economy, Governments the world over are faced with challenges relating to the
regulatory environment, emerging global trends in the insurance sector, technological
innovations and liberalization of the insurance sector.
Access to library materials and services, on one dimension, is represented in the location
of physical facilities. Because libraries are traveled-to outlets, marketing location theories can be
applied successfully to library siting. (Wood and Koontz)
accountability Libraries like private sector businesses are increasingly called upon to make all
units accountable for results. Growing funds are needed for technology as opposed to only
books. Funders often cut the library budget first, in favor of other agencies such as police and
fire or other seemingly, more necessary agencies.
Destinations in authentic (often Third World) countries are often off the beaten track. Tourists
enjoy authentic experiences in places which have experienced limited tourism development.
Emerging destinations in Asia, South America and Africa attract a small number of adventurous
tourists who are prepared to forego their comfort in order to interact with local communities and
unspoiled surroundings. Although these regions may develop at a later stage to mass tourism
destinations, they need to be planned properly in order to sustain their resources.
The authorities have made continuous efforts to build benchmarks at different points along
the yield curve. The aim of this strategy is to further develop the interest rate term structure
in the local currency, which would allow better pricing and liquidity of bonds issued both by
the government itself and by the private sector. To this end, the authorities have increased the
average maturity of the outstanding debt and smoothed its maturity profile.
The concept of technological capabilities, conceived by ROSENBERG (1974), encompasses the
knowledge and know-how of the development of new processes and products. Empirical stud-
ies support the hypothesis that technological capabilities are decisive determinants of innova-
tion cost. They are thus important factors for innovation decisions (COHEN, 1995) and rele-
vant for both cleaner production and end-of-pipe technologies. JANZ et al.
The way the data is shared across the drives has a strong influence on performance. It’s
convenient to think of the disk storage as a large number of data sectors that are
addressable by number, rather like the pages in a book. The most obvious method is to
divide the virtual disk into groups of consecutive sectors the size of the individual
physical disks and store them in this manner, rather like the way a large encyclopaedia is
divided into a number of volumes. This method is called concatenation, and sometimes
JBOD (Just a Bunch Of Disks). It works well when the access to the virtual...
Payment cards in the form of debit cards are usually issued by banks as bank cards with which
customers may also draw on their account balances outside their bank (eg cashless payments at
automatic cashpoints, withdrawals at cash dispensers).
Bank cards as payment cards have evolved since their introduction as guarantee cards for
eurocheques (ec cards) and their main function today is for electronic payments at payment terminals.
Efforts to master the crisis have fallen short so far. Measures have been primarily
implemented at a national level, if they have been implemented at all. As in many other
countries, the bank rescue package in Germany has only been partially successful. The
package’s provisions for the sale of toxic assets have hardly been taken advantage of to
· Namibia is carrying out a phased testing and implementation of the SEEA approach to
environmental accounting. It is focused on several key natural resource sectors, and is
designed to answer such questions as how to allocate water among competing uses and
how land degradation affects the productivity of rangeland.
· The Netherlands routinely constructs the "National Accounting Matrix Including
Environmental Accounts" (NAMEA), an extended form of the national accounts
input/output matrix which tracks pollution emissions by economic sector.