A sandbox-based approach to the deobfuscation and dissection of php-based malware
- Authors: Wrench, Peter M , Irwin, Barry V W
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/429258 , vital:72571 , 10.23919/SAIEE.2015.8531886
- Description: The creation and proliferation of PHP-based Remote Access Trojans (or web shells) used in both the compromise and post exploitation of web platforms has fuelled research into automated methods of dissecting and analysing these shells. Current malware tools disguise themselves by making use of obfuscation techniques designed to frustrate any efforts to dissect or reverse engineer the code. Advanced code engineering can even cause malware to behave differently if it detects that it is not running on the system for which it was originally targeted. To combat these defensive techniques, this paper presents a sandbox-based environment that aims to accurately mimic a vulnerable host and is capable of semi-automatic semantic dissection and syntactic deobfuscation of PHP code.
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- Date Issued: 2015
Fish utilization of surf-zones. Are they changing? A case study of the sheltered, warm-temperate King’s Beach
- Authors: Rishworth, Gavin M , Strydom, Nadine A , Potts, Warren M
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/124504 , vital:35619 , https://doi.org/10.1080/15627020.2014.11407616
- Description: Surf-zone fish communities and their shifts over time are generally poorly understood. The aim of this study was to compare the current surf-zone fish assemblage at King’s Beach, South Africa, to a similar study conducted three decades ago, before the collapse of many exploited shore fishes in the region. Beach seine nets (mesh sizes of 10 and 50 mm) were used to target juvenile and adult fishes bimonthly from February to August 2011 over the high tide around sunset. A total of 14 species were recorded in both the 30mand 100mseine nets. The catch in these seine nets was dominated by Pomadasys olivaceus and Liza richardsonii, and this was significantly different to three decades ago, when P. olivaceus, Sarpa salpa and Diplodus capensis dominated the catch. Important linefish species belonging to the Sparidae and Sciaenidae families were significantly smaller and less abundant in this study. Two sparids, S. salpa and Lithognathus mormyrus, which made a large contribution to the surf-zone catch three decades ago were absent during this study. Reasons for the significant shifts in the surf-zone fish community, including overexploitation of the linefish and potential habitat modification, are discussed.
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- Date Issued: 2015
Transnationalism as Process, Diaspora as Condition:
- Authors: Owen, Joy
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147983 , vital:38699 , https://www.ajol.info/index.php/jsda/article/view/136745
- Description: In 2004 I embarked on 15 months of ethnographic fieldwork that spanned a six year period with Congolese migrants in Muizenberg, Cape Town. During fieldwork it was necessary to identify these migrants either as diasporic or as a transnational community given the purchase of transnationalism in the migration field.
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- Date Issued: 2015
Shifting white identities in South Africa: white Africanness and the struggle for racial justice
- Authors: Matthews, Sally
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/142180 , vital:38056 , DOI: 10.25159/2413-3086/3821
- Description: The end of apartheid predictably caused something of an identity crisis for white South Africans. The sense of uncertainty about what it means to be white has led to much public debate about whiteness in South Africa, as well as a growing body of literature on whites in post-apartheid South Africa. One of the many responses to this need to rethink white identity has been the claim by some that white South Africans can be considered to be African or ought to begin to think of themselves as being African. This paper argues that whites' assertion of an African identity does not necessarily assist in the achievement of racial justice, but that some kind of shift in white identity is required in order for whites to be able to contribute to the achievement of a racially just South Africa. In making this argument, the paper brings contemporary discussions on race and whiteness, and in particular discussions about racial eliminativism, to bear on the question of whether or not white South Africans may rightly claim an African identity.
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- Date Issued: 2015
Issues and concerns in developing regulated markets for endangered species products: the case of rhinoceros horns
- Authors: Collins, Alan , Fraser, Gavin C G , Snowball, Jeanette D
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/124877 , vital:35706 , https://doi.org/10.1093/cje/bev076
- Description: A proposal for addressing rhinoceros poaching is to legalise the trade in rhino horn and adopt a regulated market approach, overturning the current trade ban. This orthodox economic prescription aims to reduce incentives to poach endangered wildlife by driving down the market price of their products via auctioned stockpile releases. Biologists are clear, however, that securing a stockpile for some species needs biological success in captive breeding programmes (CBPs), which varies markedly across species and habitats. Rhinoceros herds in a CBP would need spatially extensive terrain and costly permanent security measures; this only appears feasible for the less aggressive ‘white’ rhino. We argue that the market price would actually need to be sustained at a high level to cover protection costs over the longer reproduction cycles in CBPs and that, without extensive monitoring and the correct institutional structures being in place, legalising trade may encourage, rather than prevent, poaching. Supplementary policy measures that differentiate among consumer groups would also likely prove necessary.
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- Date Issued: 2015